Ready, Set, Leap!® has no significant effect on preschool print knowledge (domain average effect size 0.06)¶
Claim · All claims
Evidence · 1 study · quant-synthesisr2·q3·i0negligible
Currency · newest study 2008 · checked against its sources 2026-10-20 (automated, 1 of 1 entry) · 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 i0 Neither RCT found a statistically significant effect on print knowledge across five measures, with a cross-study domain average effect size of 0.06. → What Works Clearinghouse 2008
Evidence¶
What Works Clearinghouse 2008¶
What Works Clearinghouse, U.S. Department of Education. (2008). WWC Intervention Report: Ready, Set, Leap!®. https://ies.ed.gov/ncee/wwc/InterventionReport/430
q3 · i0 · quant-synthesis · r2
Print knowledge findings from two RCTs. Appendix A3.2 prints five individual effect sizes from −0.08 to 0.12 (0.12 and −0.08 in RMC 2003; 0.08, 0.01 and 0.02 in PCER 2008; all ns) and a domain average of 0.06 with improvement index +2 percentile points. PCER also used TERA-3 and WJ III Spelling.
"RMC Research Corporation (2003) reported no significant effect of Ready, Set, Leap!® on print knowledge when measured using the Woodcock-Johnson III (WJ III) Letter-Word Identification subtest and the Dynamic Indicators of Basic Early Literacy Skills (DIBELS) Letter Naming Fluency subtest."
Discussion¶
Learner Variables¶
- Alphabet Knowledge and Print Awareness — outcome: instruction changes it
Related Claims¶
- Phonological awareness training plus letter knowledge training has positive effects on preschoolers' print knowledge — related
- Ready, Set, Leap!® has no significant effect on preschool early reading/writing (effect size 0.09) — related
- Ready, Set, Leap!® effects do not persist to kindergarten follow-up on oral language, print knowledge, or math measures — related
- Ready, Set, Leap!® shows no significant effect on preschool math; the study authors' negative finding was not significant in WWC calculations — related
- Ready, Set, Leap!® has no significant effect on preschool oral language (domain average effect size 0.02) — related
- Ready, Set, Leap!® has no significant effect on preschool phonological processing (domain average effect size 0.06) — related
- Ready, Set, Leap!® shows no discernible effects on oral language, print knowledge, phonological processing, early reading/writing, or math in preschoolers — a broader claim this one bears on
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
ready-set-leap-null-print-knowledge |
title |
Ready, Set, Leap!® has no significant effect on preschool print knowledge (domain average effect size 0.06) |
description |
Ready, Set, Leap!® has no significant effect on preschool print knowledge (domain average effect size 0.06) |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2008 |
source_checked |
2026-10-20 |
generated |
by process:wiki-ingest on 2026-10-07 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — what-works-clearinghouse-2008 |
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