The improvement index for Little Books on general reading achievement is +12 percentile points for each delivery variation, averaging +12 percentile points across the study¶

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¶

q3 i? Across the three variations of Little Books, the WWC-computed improvement index for general reading achievement was +12 percentile points for each group, averaging +12 for the study. → WWC Intervention Report: Little Books 2007

Evidence¶

WWC Intervention Report: Little Books 2007¶

WWC Intervention Report: Little Books. (2007). What Works Clearinghouse, U.S. Department of Education. https://ies.ed.gov/ncee/wwc

q3 · i? · causal · r?

WWC computation from the single study meeting standards (Phillips et al., 1990 randomized controlled trial of 314 analyzed kindergartners). The improvement index represents the percentile-rank difference between the average intervention student and the average comparison student; the report states it was "+12 percentile points for each group".

"The improvement index across the three variations of Little Books for general reading achievement was +12 percentile points for each group, resulting in an average of +12 percentile points for the study."

Discussion¶

Related Claims¶

• Using Little Books in kindergarten produces potentially positive effects on general reading achievement, with all three delivery variations (home only, school only, and home and school) outperforming a comparison condition on the Metropolitan Readiness Test — related