Claims

Tracey and Young (2004): grade 5 students using differentiated KidBiz3000® outscored comparison students on the SRI (effect size 0.29)

Claim · All claims
Evidence · 1 study · causal r1 · q2 · i1 small
Currency · newest study 2018 · 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 i1 In one year-long quasi-experiment, fifth-graders in differentiated KidBiz3000® classrooms scored higher on the Scholastic Reading Inventory than business-as-usual comparison students (effect size 0.29, improvement index +11), though significance did not survive clustering correction. → What Works Clearinghouse 2018

Evidence

What Works Clearinghouse 2018

What Works Clearinghouse, Institute of Education Sciences, U.S. Department of Education. (2018). Adolescent Literacy intervention report: Achieve3000®. https://whatworks.ed.gov

q2 · i1 · causal · r1

One-year quasi-experiment in Bayonne, NJ with 156 students (80 intervention, 76 comparison in four classrooms); WWC calculations showed intervention mean 866.06 vs comparison 817.57, effect size 0.29, improvement index +11, original p < .01 but WWC-computed p = .41 after clustering correction.

"The authors used the Scholastic Reading Inventory (SRI) assessment for students in grade 5. The outcome was reviewed in the comprehension domain."

Discussion

Page metadata
Field Value
type claim
id kidbiz-differentiated-sri-positive-effect
title Tracey and Young (2004): grade 5 students using differentiated KidBiz3000® outscored comparison students on the SRI (effect size 0.29)
description Tracey and Young (2004): grade 5 students using differentiated KidBiz3000® outscored comparison students on the SRI (effect size 0.29)
status review
evidence_strength weak
newest_evidence 2018
generated by process:wiki-ingest on 2026-10-07
trust unverified — no one has confirmed this page's content
sources 1 — what-works-clearinghouse-2018

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