Claims

Fluency effects of Fluency Formula™ differ by initial ability: positive for low-ability students (effect size 0.66) and negative for high-ability students (effect size –0.21), both non-significant

Claim · All claims
Evidence · 1 study · causal r? · q3
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.

q3 i? Low-ability second-graders showed a positive fluency effect (0.66, improvement index +25) while high-ability students showed a negative effect (–0.21, improvement index –11); neither was statistically significant. → Fluency Formula™ WWC Intervention Report 2007

Evidence

Fluency Formula™ WWC Intervention Report 2007

Fluency Formula™ WWC Intervention Report. (2007). What Works Clearinghouse, U.S. Department of Education. http://teacher.scholastic.com/products/fluencyformula/pdfs/FF_EffectivessReport.pdf

q3 · i? · causal · r?

Subgroup analysis of the randomized controlled trial (Appendix A4): low-ability subgroup (12 classrooms/72 students) effect size 0.66, ns, +25; high-ability subgroup (12/56) effect size –0.21, ns, –11 on the OFA.

"The study only reported intervention effects by high- and low-ability student groups, based on the OFA pretest score. These results are shown in Appendix A4."

Discussion

Learner Variables

Page metadata
Field Value
type claim
id fluency-formula-fluency-effects-differ-by-initial-ability
title Fluency effects of Fluency Formula™ differ by initial ability: positive for low-ability students (effect size 0.66) and negative for high-ability students (effect size –0.21), both non-significant
description Fluency effects of Fluency Formula™ differ by initial ability: positive for low-ability students (effect size 0.66) and negative for high-ability students (effect size –0.21), both non-significant
status review
evidence_strength mixed
newest_evidence 2007
generated by process:wiki-ingest on 2026-10-07
trust unverified — no one has confirmed this page's content
sources 1 — fluency-formula-wwc-intervention-report-2007

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