Across three studies of Achieve3000 (35,070 students), the average effect size was 0.00¶
Claim · All claims
Evidence · 1 study · quant-synthesisr?·q2·i0negligible
Currency · newest study 2021 · not yet checked against its sources · 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.
q2 i0 The average effect size across all studies of Achieve3000 was 0.00, with one additional small study and a very large study finding no differences. → Achieve3000 2021
Evidence¶
Achieve3000 2021¶
Achieve3000. (2021). Achieve3000 evidence rating and program description. https://www.achieve3000.com
q2 · i0 · quant-synthesis · r?
The Program Outcomes summary reports three studies with 35,070 students and an "average effect size across all studies was 0.00." One additional small study and a very large study found no differences, offsetting the single positive SRI result.
"However, one additional small study and a very large study found no differences, and the average effect size across all studies was 0.00."
Discussion¶
Related Claims¶
- Achieve3000 use shows significant positive effects on Total Reading Scores for sixth and ninth graders, with a weighted average effect size of +0.29 — related
- One small evaluation of Achieve3000 found positive effects on the SRI but not Terra Nova (average effect size +0.16) — a narrower finding that bears on this claim
- WWC rates Achieve3000® as having potentially positive effects on comprehension and general literacy achievement for adolescent readers — related
- EL students using Achieve3000 scored significantly higher on adjusted post-pilot Lexile scores than comparison students who did not use the tool — related
- Comprehension domain: one study found a substantively important positive effect and one an indeterminate effect — related
- Tracey and Young (2004): grade 5 students using differentiated KidBiz3000® outscored comparison students on the SRI (effect size 0.29) — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
achieve3000-average-effect-size-zero |
title |
Across three studies of Achieve3000 (35,070 students), the average effect size was 0.00 |
description |
Across three studies of Achieve3000 (35,070 students), the average effect size was 0.00 |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2021 |
generated |
by process:wiki-ingest on 2026-10-09 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — achieve3000-2021 |
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