{"id":"AIBD-0717","title":"Evidence for ESSA rates DreamBox Math Strong on two randomized studies with math gains for students in kindergarten to grade 2","summary":"Evidence for ESSA rates DreamBox Math Strong. In two randomized studies, users in kindergarten to grade 2 outperformed controls, while gains on grade 4 and 5 state tests were not meaningful.","date_observed":"2026-10-31","date_basis":"source access","date_precision":"day","benefit_status":"reported","source_collection":null,"source_entry":null,"account":"DreamBox Math is an adaptive online program that supplements math teaching in class. Evidence for ESSA rates it Strong on two randomized studies with 13,320 students. The clearinghouse belongs to the Center for Research and Reform in Education at Johns Hopkins University. In the first study, over 500 kindergarten and first-grade students used the program for four months. They attended three charter schools with high poverty in the San Francisco Bay Area. They gained more than controls on a measurement and geometry subtest (effect size +0.16) and scored higher on the whole test (+0.11). The second study covered over 10,000 students in 24 North Carolina schools. Students in kindergarten to grade 2 outperformed controls on the Number Knowledge Test (+0.12). Grade 4 and 5 results on the state end-of-grade test were not meaningfully higher (+0.03). Averaged across studies and measures, the effect size is +0.10. SRI International conducted the first study, which the What Works Clearinghouse also reviewed. The clearinghouse does not say who funded the studies or how the program adapts.","category":"aggregate result","unexpected":false,"purpose":"DreamBox Learning built DreamBox Math to supplement math teaching in class with lessons that adapt continuously to each learner's actions and decisions.","system":"DreamBox Math (adaptive online mathematics program)","model_version":null,"developer":"DreamBox Learning","deployer":"Schools in the two studies: three high-poverty charter schools in the San Francisco Bay Area and 24 schools across North Carolina","location":"California and North Carolina, United States","domain":"Education","segment":null,"benefit_type":"Improved Learning","work_activities":["4.A.4.b.3"],"taxonomy_note":null,"registry_ids":{},"ratings":[{"group":"personal","depth":2,"reason":"Users in kindergarten to grade 2 outperformed controls in two randomized studies, with effect sizes of +0.11 to +0.16, though grade 4 and 5 gains were not meaningful."}],"ai_role":{"status":"assessed","statement":"Both studies were randomized, so they compare students with and without the program. The clearinghouse says that the program adapts continuously to learners' actions but does not show that it learns from data."},"evidence":[{"kind":"assessment report","citation":"Evidence for ESSA, Center for Research and Reform in Education, Johns Hopkins University. DreamBox Math: program page, rating Strong. Accessed 31 October 2026.","title":"DreamBox Math","url":"https://www.evidenceforessa.org/program/dreambox-learning/","date":null,"written_by":"independent","quote":"Averaging across studies and measures, the effect size = +0.10. In addition to a “Strong” rating, DreamBox receives a badge for having two randomized studies with significant positive results."}],"replication":{"produced_by":["The program adapted continuously to learners' actions and decisions in a game-like environment.","Schools used it to complement classroom instruction."],"must_hold":["Schools may need staff for technology support.","The gains appeared in kindergarten to grade 2 and were not meaningful in grades 4 and 5."],"echoes":[]},"paired_incident":null,"headline":"*DreamBox Math* earns a Strong rating for early math gains","metric":"the effect size is +0.10","comparator":{"against":"Control students in the North Carolina randomized study","before":null,"after":"effect size = +0.12 (K-2, Number Knowledge Test), +0.03 (grades 4-5, end-of-grade test)","basis":"measured","quote":"On the Number Knowlege Test, K-2 students in schools using DreamBox significantly outperformed control students (effect size = +0.12), whereas results on the North Carolina End-of-Grade assessment were not meaningfully higher for 4th and 5th-grade students exposed to DreamBox (effect size = +0.03).","url":"https://www.evidenceforessa.org/program/dreambox-learning/"},"later":null,"value":null,"developer_country":"United States","deployer_country":"United States","unrated_because":null,"brief_notes":null,"brief":null,"revisions":[{"date":"2026-10-31","change":"Added the record from the finding of Evidence for ESSA.","source":"https://www.evidenceforessa.org/program/dreambox-learning/","editor":"AIBD"}],"confidence":"found","shade":"high","claim_status":"Found by an assessment body","claim_basis":"Sources: one independent assessment report. The cited evidence includes no independent study or report.","case_jurisdictions":["United States"],"profile":{"case_id":"AIBD-0717","catalog_version":"1.0.0","source_fingerprint":"9d3c6337bd2670e1f8d4c3484a220ee1cda3a205a88f26738f8b8e88be950455","collection_refs":[{"collection_id":"aibd","version":"2026-10-31"},{"collection_id":"querist","version":"2026-10-25"}],"source_ids":["AIBD-0717-source-0001"],"families":{"strategic assessments":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"Editorial assignment.","review_state":"not_assessed","coverage":"partial","record_ids":[]},"evaluations":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"Editorial assignment.","review_state":"not_assessed","coverage":"partial","record_ids":[]},"monetary observations":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"Editorial assignment.","review_state":"not_assessed","coverage":"partial","record_ids":[]},"institutional decisions":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"Editorial assignment.","review_state":"not_assessed","coverage":"partial","record_ids":[]}},"fields":{"actors[]":{"state":"value_present","value":{"kind":"record_fields","fields":{"developer":"DreamBox Learning","deployer":"Schools in the two studies: three high-poverty charter schools in the San Francisco Bay Area and 24 schools across North Carolina"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["developer","deployer"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"actors[].ownership_control":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"ai_contribution":{"state":"value_present","value":{"kind":"record_fields","fields":{"ai_role":{"status":"assessed","statement":"Both studies were randomized, so they compare students with and without the program. The clearinghouse says that the program adapts continuously to learners' actions but does not show that it learns from data."}}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["ai_role"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"ai_relationship":{"state":"value_present","value":{"kind":"record_fields","fields":{"category":"aggregate result","ai_role":{"status":"assessed","statement":"Both studies were randomized, so they compare students with and without the program. The clearinghouse says that the program adapts continuously to learners' actions but does not show that it learns from data."}}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["ai_role","category"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"assessments[].alternatives":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"assessments[].assessor_date":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"assessments[].depth":{"state":"value_present","value":{"kind":"record_fields","fields":{"ratings":[{"group":"personal","depth":2,"reason":"Users in kindergarten to grade 2 outperformed controls in two randomized studies, with effect sizes of +0.11 to +0.16, though grade 4 and 5 gains were not meaningful."}]}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["ratings"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"assessments[].display_confidence":{"state":"value_present","value":{"kind":"structured","data":{"confidence":"high","evidence_word":"found","claim_status":"Found by an assessment body","basis":"Sources: one independent assessment report. The cited evidence includes no independent study or report.","interpretation":"Existing display rule preserved; the richer outcome-specific confidence question still needs review."}},"provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"assessments[].rationale":{"state":"value_present","value":{"kind":"record_fields","fields":{"ratings":[{"group":"personal","depth":2,"reason":"Users in kindergarten to grade 2 outperformed controls in two randomized studies, with effect sizes of +0.11 to +0.16, though grade 4 and 5 gains were not meaningful."}]}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["ratings"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"assessments[].rubric_version":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"assessments[].status_basis":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"assessments[].target":{"state":"value_present","value":{"kind":"record_fields","fields":{"ratings":[{"group":"personal","depth":2,"reason":"Users in kindergarten to grade 2 outperformed controls in two randomized studies, with effect sizes of +0.11 to +0.16, though grade 4 and 5 gains were not meaningful."}]}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["ratings"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"availability":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"brief":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"case_kind":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"case_links[]":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"claims[].evidence_links":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"claims[].evidence_strength":{"state":"value_present","value":{"kind":"structured","data":{"answer":"Found by an assessment body. Sources: one independent assessment report. The cited evidence includes no independent study or report.","evidence_word":"found","claim_status":"Found by an assessment body"}},"provenance":{"kind":"source_review","basis":"Editorial assignment.","record_fields":["evidence"],"source_refs":["AIBD-0717-source-0001"],"reviewed_on":"2026-10-29"},"review_state":"reviewed","coverage":"complete","display":{"answer":"Found by an assessment body. Sources: one independent assessment report. The cited evidence includes no independent study or report.","inferred":false}},"claims[].missingness":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"claims[].proposition":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"cross_border_flows[]":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"decisions[].action_outcome":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"institutional decisions"},"decisions[].grounds":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"institutional decisions"},"decisions[].institution_task":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"institutional decisions"},"decisions[].success_criterion":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"institutional decisions"},"deployment_stage":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"economics[].amount":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].costs[]":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].counterfactual":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].currency_price_basis":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].gross_net":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].measure_type":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].period_unit":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].realization":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].recipient_payer":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].return_payback":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"economics[].valuation_method":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"monetary observations"},"evaluations[].ai_uplift":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].comparator":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].design":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].effect":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].exposure":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].id":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].measurement_method":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].metric":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].reproduction_materials":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].setting_sample":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"evaluations[].uncertainty_limitations":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"evaluations"},"external_references[]":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"follow_up[]":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"human_oversight":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"id":{"state":"value_present","value":{"kind":"record_fields","fields":{"id":"AIBD-0717"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["id"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"infrastructure_dependencies[]":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"outcomes[].beneficiaries":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"outcomes[].beneficiary_count":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"outcomes[].benefit_type":{"state":"value_present","value":{"kind":"record_fields","fields":{"benefit_type":"Improved Learning"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["benefit_type"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"outcomes[].claim":{"state":"value_present","value":{"kind":"record_fields","fields":{"account":"DreamBox Math is an adaptive online program that supplements math teaching in class. Evidence for ESSA rates it Strong on two randomized studies with 13,320 students. The clearinghouse belongs to the Center for Research and Reform in Education at Johns Hopkins University. In the first study, over 500 kindergarten and first-grade students used the program for four months. They attended three charter schools with high poverty in the San Francisco Bay Area. They gained more than controls on a measurement and geometry subtest (effect size +0.16) and scored higher on the whole test (+0.11). The second study covered over 10,000 students in 24 North Carolina schools. Students in kindergarten to grade 2 outperformed controls on the Number Knowledge Test (+0.12). Grade 4 and 5 results on the state end-of-grade test were not meaningfully higher (+0.03). Averaged across studies and measures, the effect size is +0.10. SRI International conducted the first study, which the What Works Clearinghouse also reviewed. The clearinghouse does not say who funded the studies or how the program adapts.","benefit_type":"Improved Learning"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["account","benefit_type"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"outcomes[].distribution":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"outcomes[].duration":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"outcomes[].id":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"outcomes[].stakeholder_group":{"state":"value_present","value":{"kind":"record_fields","fields":{"ratings":[{"group":"personal","depth":2,"reason":"Users in kindergarten to grade 2 outperformed controls in two randomized studies, with effect sizes of +0.11 to +0.16, though grade 4 and 5 gains were not meaningful."}]}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["ratings"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"outcomes[].status":{"state":"value_present","value":{"kind":"record_fields","fields":{"benefit_status":"reported"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["benefit_status"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"outcomes[].tradeoffs":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"outcomes[].unexpected":{"state":"value_present","value":{"kind":"record_fields","fields":{"unexpected":false,"purpose":"DreamBox Learning built DreamBox Math to supplement math teaching in class with lessons that adapt continuously to each learner's actions and decisions."}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["unexpected","purpose"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"places[]":{"state":"value_present","value":{"kind":"record_fields","fields":{"location":"California and North Carolina, United States","developer_country":"United States","deployer_country":"United States"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["location","developer_country","deployer_country"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"purpose":{"state":"value_present","value":{"kind":"record_fields","fields":{"purpose":"DreamBox Learning built DreamBox Math to supplement math teaching in class with lessons that adapt continuously to each learner's actions and decisions."}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["purpose"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"record_dates":{"state":"value_present","value":{"kind":"record_fields","fields":{"date_observed":"2026-10-31","date_basis":"source access","date_precision":"day","revisions":[{"date":"2026-10-31","change":"Added the record from the finding of Evidence for ESSA.","source":"https://www.evidenceforessa.org/program/dreambox-learning/","editor":"AIBD"}]}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["date_observed","date_basis","date_precision","revisions"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"replication.attempts[]":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"replication.conditions":{"state":"value_present","value":{"kind":"record_fields","fields":{"replication":{"produced_by":["The program adapted continuously to learners' actions and decisions in a game-like environment.","Schools used it to complement classroom instruction."],"must_hold":["Schools may need staff for technology support.","The gains appeared in kindergarten to grade 2 and were not meaningful in grades 4 and 5."],"echoes":[]}}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["replication"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"revision_history[]":{"state":"value_present","value":{"kind":"record_fields","fields":{"revisions":[{"date":"2026-10-31","change":"Added the record from the finding of Evidence for ESSA.","source":"https://www.evidenceforessa.org/program/dreambox-learning/","editor":"AIBD"}]}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["revisions"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"sector":{"state":"value_present","value":{"kind":"record_fields","fields":{"domain":"Education"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["domain"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"sources[].access_version":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"sources[].citation_locator":{"state":"value_present","value":{"kind":"record_fields","fields":{"evidence":[{"kind":"assessment report","citation":"Evidence for ESSA, Center for Research and Reform in Education, Johns Hopkins University. DreamBox Math: program page, rating Strong. Accessed 31 October 2026.","title":"DreamBox Math","url":"https://www.evidenceforessa.org/program/dreambox-learning/","written_by":"independent","quote":"Averaging across studies and measures, the effect size = +0.10. In addition to a “Strong” rating, DreamBox receives a badge for having two randomized studies with significant positive results."}]}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["evidence"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"sources[].id":{"state":"value_present","value":{"kind":"identifiers","identifiers":["AIBD-0717-source-0001"],"role":"Existing evidence items, in their original order"},"provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"review_state":"record_mapped","coverage":"complete"},"sources[].language":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"sources[].relationship":{"state":"value_present","value":{"kind":"record_fields","fields":{"evidence":[{"kind":"assessment report","citation":"Evidence for ESSA, Center for Research and Reform in Education, Johns Hopkins University. DreamBox Math: program page, rating Strong. Accessed 31 October 2026.","title":"DreamBox Math","url":"https://www.evidenceforessa.org/program/dreambox-learning/","written_by":"independent","quote":"Averaging across studies and measures, the effect size = +0.10. In addition to a “Strong” rating, DreamBox receives a badge for having two randomized studies with significant positive results."}]}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["evidence"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"sources[].upstream_sources":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"strategic_assessments[]":{"state":"unresolved","review_state":"not_assessed","coverage":"partial","family":"strategic assessments"},"summary":{"state":"value_present","value":{"kind":"record_fields","fields":{"summary":"Evidence for ESSA rates DreamBox Math Strong. In two randomized studies, users in kindergarten to grade 2 outperformed controls, while gains on grade 4 and 5 state tests were not meaningful.","account":"DreamBox Math is an adaptive online program that supplements math teaching in class. Evidence for ESSA rates it Strong on two randomized studies with 13,320 students. The clearinghouse belongs to the Center for Research and Reform in Education at Johns Hopkins University. In the first study, over 500 kindergarten and first-grade students used the program for four months. They attended three charter schools with high poverty in the San Francisco Bay Area. They gained more than controls on a measurement and geometry subtest (effect size +0.16) and scored higher on the whole test (+0.11). The second study covered over 10,000 students in 24 North Carolina schools. Students in kindergarten to grade 2 outperformed controls on the Number Knowledge Test (+0.12). Grade 4 and 5 results on the state end-of-grade test were not meaningfully higher (+0.03). Averaged across studies and measures, the effect size is +0.10. SRI International conducted the first study, which the What Works Clearinghouse also reviewed. The clearinghouse does not say who funded the studies or how the program adapts."}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["summary","account"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"systems[].autonomy_permissions":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].component_role":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].deployment_configuration":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].inputs_outputs":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].model_name":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].model_version":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"systems[].product_name":{"state":"value_present","value":{"kind":"record_fields","fields":{"system":"DreamBox Math (adaptive online mathematics program)"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["system"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"systems[].provider":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"taxonomy_crosswalks[]":{"state":"unresolved","provenance":{"kind":"curatorial","basis":"Editorial assignment.","record_fields":[],"source_refs":[]},"reason":"This is an explicit unresolved assignment: the sources on record do not settle this question.","review_state":"not_assessed","coverage":"partial"},"title":{"state":"value_present","value":{"kind":"record_fields","fields":{"title":"Evidence for ESSA rates DreamBox Math Strong on two randomized studies with math gains for students in kindergarten to grade 2","headline":"*DreamBox Math* earns a Strong rating for early math gains"}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["title","headline"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"},"version":{"state":"value_present","value":{"kind":"identifiers","identifiers":["1c0a8480d5f3d16db16836f6114402d9976030ae501a443c504808089f924c19"],"role":"SHA-256 of the complete public record and its assessments"},"provenance":{"kind":"curatorial","basis":"SHA-256 of the public record, its assessments, and its displayed answers and notes, excluding its own identifier and the derived coverage summary.","record_fields":[],"source_refs":[]},"review_state":"record_mapped","coverage":"complete"},"workflow":{"state":"value_present","value":{"kind":"record_fields","fields":{"account":"DreamBox Math is an adaptive online program that supplements math teaching in class. Evidence for ESSA rates it Strong on two randomized studies with 13,320 students. The clearinghouse belongs to the Center for Research and Reform in Education at Johns Hopkins University. In the first study, over 500 kindergarten and first-grade students used the program for four months. They attended three charter schools with high poverty in the San Francisco Bay Area. They gained more than controls on a measurement and geometry subtest (effect size +0.16) and scored higher on the whole test (+0.11). The second study covered over 10,000 students in 24 North Carolina schools. Students in kindergarten to grade 2 outperformed controls on the Number Knowledge Test (+0.12). Grade 4 and 5 results on the state end-of-grade test were not meaningfully higher (+0.03). Averaged across studies and measures, the effect size is +0.10. SRI International conducted the first study, which the What Works Clearinghouse also reviewed. The clearinghouse does not say who funded the studies or how the program adapts.","replication":{"produced_by":["The program adapted continuously to learners' actions and decisions in a game-like environment.","Schools used it to complement classroom instruction."],"must_hold":["Schools may need staff for technology support.","The gains appeared in kindergarten to grade 2 and were not meaningful in grades 4 and 5."],"echoes":[]}}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["account","replication"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"}},"summary":{"total":91,"addressed":91,"known":28,"reviewed":1,"reviewed_complete":1,"reviewed_partial":0,"record_mapped":27,"review_not_assessed":63,"not_assessed":0,"complete":false,"by_state":{"value_present":28,"not_reported":0,"unresolved":63,"not_assessed":0,"not_applicable":0,"withheld":0,"source_unavailable":0}}},"presentation_version":"dc73ebb54b055edcd51d6078c0dcb5abc62375e261e080aa1cb5e52e44c7bd1a"}