Students learning from World History Project demonstrate more understanding of continuity and change over time in history than comparison students¶

Claim · All claims
Evidence · 1 study · causal r1 · q3 · i2 medium
Currency · newest study 2023 · checked against its sources 2026-10-18 (automated, 1 of 1 entry) · not reviewed by a person

Subclaims¶

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q3 i2 WHP students scored higher on continuity and change over time in both summative student work (g = .60) and everyday student work (g = .36). → Iwatani 2023

Evidence¶

Iwatani 2023¶

Iwatani, E., Hardy, A., Means, B., Daal, S., & Wei, X. (2023). Evaluation of World History Project. Digital Promise. https://doi.org/10.51388/20.500.12265/199

q3 · i2 · causal · r1

Analysis of 1,509 rubric-scored student work samples from 25 teachers in the 2022-23 comparison found significant outcome differences favoring WHP only for continuity and change over time, with the printed Hedges' g values of .60 and .36.

"We found statistically significant impact estimates on student outcomes for historical thinking skills, favoring the use of World History Project in: continuity over time in history summative student work ( M WHP = .21, M Comp = .06, β = .15, SE = 0.06, p = .014, Hedges' g = .60) and everyday student work ( M WHP = .11, M Comp = .04, β = .07, SE = 0.03, p = .032, Hedges' g = .36)"

Discussion¶

Learner Variables¶

Academic and Critical Literacy — outcome: instruction changes it

Disciplinary Literacy Instruction Improves Comprehension — the general claim this finding bears on, with the studies behind it
An evaluation of the World History Project detected no statistically significant difference from comparison students in the other five historical thinking skills — related
World History Project does not engage students more than business-as-usual curricula on first implementation, with somewhat negative perception trends — related
World History Project adoption increases learning opportunities for historical thinking in summative activities relative to business-as-usual curricula — related
World History Project assignments scored higher on most learning opportunity rubric dimensions than other assignments — related

Page metadata

Field	Value
`type`	`claim`
`id`	`whp-students-continuity-change-outcomes`
`title`	`Students learning from World History Project demonstrate more understanding of continuity and change over time in history than comparison students`
`description`	`Students learning from World History Project demonstrate more understanding of continuity and change over time in history than comparison students`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`2023`
`source_checked`	`2026-10-18`
`generated`	by `process:wiki-ingest` on `2026-10-09`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `iwatani-2023`

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