Two studies of
Cooperative Integrated Reading and Composition® that fall within the scope of the Adolescent Literacy review protocol meet What Works Clearinghouse (WWC) evidence standards with reservations. The two studies included approximately 1,460 students in grades 2 through 6 who attended nine schools located in two school districts in the United States.
Based on these two studies, the WWC considers the extent of evidence for Cooperative Integrated Reading and Composition® on adolescent learners to be medium to large for the comprehension and general literacy achievement domains. No studies that meet WWC evidence standards with or without reservations examined the effectiveness of Cooperative Integrated Reading and Composition® on adolescent learners in the alphabetics or reading fluency domains.