Claims

In the grade 7 cluster RCT, ITSS produced statistically significant positive effects on all eight comprehension outcomes (average effect size 0.23)

Claim · All claims
Evidence · 1 study · causal r2 · q3 · i1 small
Currency · newest study 2020 · 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.

q3 i1 Seventh-grade students using ITSS outperformed comparison students on the GSRT (effect size 0.17, improvement index +7, p < .01) and on seven researcher-designed measures, with outcome average effect size 0.23. → gsrt-7-1

Evidence

gsrt-7-1

What Works Clearinghouse, Institute of Education Sciences, U.S. Department of Education. (2020, April). Web-based Intelligent Tutoring for the Structure Strategy (ITSS). https://ies.ed.gov/ncee/wwc/InterventionReport/703

q3 · i1 · causal · r2

Cluster randomized controlled trial in 25 rural and suburban middle schools; 59 intervention and 49 comparison classrooms. On the GSRT with 1,868 seventh-grade students, effect size was 0.17 and improvement index +7, p < .01; posttest means were not reported for the analytic sample.

"Gray Silent Reading Test (GSRT) Seventh-grade students 1,868 nr (11.57) nr (13.41) 2.12 0.17 +7 <.01"

Discussion

Page metadata
Field Value
type claim
id itss-grade7-rct-comprehension-gains
title In the grade 7 cluster RCT, ITSS produced statistically significant positive effects on all eight comprehension outcomes (average effect size 0.23)
description In the grade 7 cluster RCT, ITSS produced statistically significant positive effects on all eight comprehension outcomes (average effect size 0.23)
status review
evidence_strength moderate
newest_evidence 2020
generated by process:wiki-ingest on 2026-10-09
trust unverified — no one has confirmed this page's content
sources 1 — gsrt-7-1

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