Claims

The evidence base for the Wilson Reading System in beginning reading is small, with no studies addressing general reading achievement

Claim · All claims
Evidence · 1 study · review r3 · q2
Currency · newest study 2007 · 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 i? Of nine reviewed studies, only one met WWC evidence standards, and the extent of evidence is small for alphabetics, fluency, and comprehension, with no studies addressing general reading achievement. → What Works Clearinghouse 2007

Evidence

What Works Clearinghouse 2007

What Works Clearinghouse, U.S. Department of Education. (2007). WWC Intervention Report: Wilson Reading System®. What Works Clearinghouse, Beginning Reading. https://ies.ed.gov/ncee/wwc/InterventionReport/546

q2 · i? · review · r3

The WWC's extent-of-evidence categorization across the three outcome domains, each based on the single Torgesen et al. (2006) randomized controlled trial covering 8 school units and 71 students; a moderate-to-large rating would require at least 350 students or 14 classrooms.

"The WWC considers the extent of evidence for Wilson Read- ing System® to be small for alphabetics, fluency, and compre- hension. No studies that met WWC evidence standards with or without reservations addressed general reading achievement."

Discussion

Page metadata
Field Value
type claim
id wilson-reading-system-small-evidence-base
title The evidence base for the Wilson Reading System in beginning reading is small, with no studies addressing general reading achievement
description The evidence base for the Wilson Reading System in beginning reading is small, with no studies addressing general reading achievement
status review
evidence_strength moderate
newest_evidence 2007
generated by process:wiki-ingest on 2026-10-07
trust unverified — no one has confirmed this page's content
sources 1 — what-works-clearinghouse-2007

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