The WWC improvement index for Twelve Together is +13 percentile points for staying in school and –6 percentile points for progressing in school¶

Claim · All claims
Evidence · 1 study · review r? · q3
Currency · newest study 2007 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Across the one study reviewed, the average improvement index was +13 percentile points for staying in school and –6 percentile points for progressing in school. → What Works Clearinghouse 2007

Evidence¶

What Works Clearinghouse 2007¶

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

q3 · i? · review · r?

The WWC computed improvement indices from the Dynarski et al. (1998) RCT. The index represents the difference between the percentile rank of the average intervention student versus the average comparison student, based solely on effect size regardless of statistical significance.

"The improvement index is +13 percentile points for staying in school and –6 percentile points for progressing in school in the one study reviewed."

Discussion¶

Related Claims¶

• Twelve Together shows no discernible effects on progressing in school as measured by highest grade completed — possibly the same claim (merge candidate)
• Twelve Together has potentially positive effects on staying in school, based on a lower (non-significant) dropout rate than control — possibly the same claim (merge candidate)
• The evidence base for Twelve Together is a single randomized controlled trial that met WWC standards only with reservations due to differential attrition — related