The authors evaluated the effects of P-SELL, a science curricular and professional development intervention for fifth-grade students with a focus on English language learners (ELLs). Using a randomized controlled trial design with 33 treatment and 33 control schools across three school districts in one state, we found significant and meaningfully…

The grade improvement program "Where There's a Will There's an A" was evaluated with 36 experimental and 37 control group undergraduates. The approach and content of the evaluated materials appear inconsistent with the body of research on academic improvement, and study results do not indicate any improved achievement. (SLD)