SpellRead™ has positive effects on alphabetics for struggling beginning readers, with an average improvement index of +18 percentile points¶
Claim · All claims
Evidence · 1 study · quant-synthesisr1·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? Across two RCTs meeting WWC standards, SpellRead™ produced positive effects on alphabetics, with improvement indices ranging from +2 to +44 percentile points. → What Works Clearinghouse 2007
Evidence¶
What Works Clearinghouse 2007¶
What Works Clearinghouse, U.S. Department of Education. (2007). WWC Intervention Report: SpellRead™. https://ies.ed.gov/ncee/wwc
q3 · i? · quant-synthesis · r1
Synthesis of two randomized controlled trials (Torgesen et al., 2006; Rashotte, MacPhee, & Torgesen, 2001) meeting WWC evidence standards, covering 208 students. The WWC computed an improvement index, finding "+18 percentile points across the two studies" for alphabetics, rated positive effects. No standardized effect size is printed for the domain average.
"The average improvement index for alphabetics is +18 percentile points across the two studies, with a range of +2 to +44 percentile points across findings."
Discussion¶
Related Claims¶
- SpellRead™ has potentially positive effects on reading comprehension, with an average improvement index of +20 percentile points — related
- SpellRead™ shows potentially positive effects on alphabetics for adolescent readers, with an average improvement index of +23 across two studies — related
- SpellRead™ shows potentially positive effects on reading fluency for adolescent readers, with an average improvement index of +14 — related
- SpellRead™ has potentially positive effects on reading fluency, with an average improvement index of +9 percentile points — related
- Earobics® has positive effects on alphabetics for K–3 beginning readers, based on four WWC-reviewed studies — related
- Sound Partners tutoring has positive effects on the alphabetics of beginning readers in grades K–3 — related
- SpellRead™ shows potentially positive effects on comprehension for adolescent readers, with an average improvement index of +11 — related
- Reading Partners tutoring significantly improves reading comprehension for grade 2-4 struggling readers, with a total effect size of +0.10 — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
spellread-positive-effects-alphabetics |
title |
SpellRead™ has positive effects on alphabetics for struggling beginning readers, with an average improvement index of +18 percentile points |
description |
SpellRead™ has positive effects on alphabetics for struggling beginning readers, with an average improvement index of +18 percentile points |
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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