Two years of BCIRC exposure is associated with larger reading gains than one year (effect size 0.87 significant versus 0.33 non-significant)¶
Claim · All claims
Evidence · 1 study (2 entries) · causalr2·q2·i1–i3
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 i3 Third graders with two years of BCIRC exposure outperformed comparison students on NAPT reading with an effect size of 0.87 that remained statistically significant after clustering correction. → Bilingual Cooperative Integrated Reading and Composition 2007
q2 i1 Third graders with one year of BCIRC exposure showed a smaller, non-significant reading effect (effect size 0.33) relative to comparison students. → Bilingual Cooperative Integrated Reading and Composition 2007 (2)
Evidence¶
Bilingual Cooperative Integrated Reading and Composition 2007¶
Bilingual Cooperative Integrated Reading and Composition. (2007). WWC Intervention Report. U.S. Department of Education, What Works Clearinghouse. https://eric.ed.gov/?id=ED405428
q2 · i3 · causal · r2
Subgroup findings from the Calderón, Hertz-Lazarowitz, and Slavin (1998) quasi-experiment: students with two years of BCIRC scored 36.83 versus 23.83 in comparison, with a printed effect size of 0.87 ("0.87 Statistically significant +31"). The WWC notes a clustering correction did not change this significance.
"Grade 3— t wo years 59 36.83 (nr) 23.83 (14.98) 13.00 0.87 Statistically significant +31"
Bilingual Cooperative Integrated Reading and Composition 2007 (2)¶
Bilingual Cooperative Integrated Reading and Composition. (2007). WWC Intervention Report. U.S. Department of Education, What Works Clearinghouse. https://eric.ed.gov/?id=ED405428
q2 · i1 · causal · r2
Subgroup findings from the same quasi-experiment: students with one year of BCIRC scored 28.83 versus 23.83 in comparison, with a printed effect size of 0.33 ("0.33 ns +13"). The WWC reports this finding became nonsignificant after correcting for clustering.
"Grade 3— o ne year 59 28.83 (nr) 23.83 (14.98) 5.00 0.33 ns +13"
Discussion¶
Related Claims¶
- A larger percentage of BCIRC students met the bilingual education exit criterion in reading (32% versus 10%) — possibly the same claim (merge candidate)
- BCIRC has potentially positive effects on English language development (effect size 0.29, not statistically significant) — related
- BCIRC has potentially positive effects on reading achievement for Spanish-speaking English language learners (effect size 0.61, not statistically significant after clustering correction) — related
- A larger percentage of BCIRC students met the bilingual education exit criterion in language (39% versus 21%), not statistically significant — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
bcirc-two-years-larger-reading-gains-than-one-year |
title |
Two years of BCIRC exposure is associated with larger reading gains than one year (effect size 0.87 significant versus 0.33 non-significant) |
description |
Two years of BCIRC exposure is associated with larger reading gains than one year (effect size 0.87 significant versus 0.33 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 |
2 — bilingual-cooperative-integrated-reading-and-composition-2007, bilingual-cooperative-integrated-reading-and-composition-2007-2 |
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