CRESPAR Report #19: Success for All/Exito Para Todos: Effects on the Reading Achievement of Students Acquiring English
Slavin, Robert E.
Madden, Nancy A.
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The effects of Success for All on the achievement of English language learners are not entirely consistent, but in general they are substantially positive. In all schools implementing Éxito Para Todos, effect sizes for first graders on Spanish assessments were very positive. The Houston study showed that this effect was more pronounced when schools were implementing most of the program’s elements. The Philadelphia evaluation showed that even after transitioning to English-only instruction, Éxito Para Todos third graders performed better on English assessments than control students who were primarily taught in English. For students in sheltered English instruction, effect sizes for all comparisons were also positive, especially for Cambodian students in Philadelphia and Mexican American students in California.