"Cooperative Integrated Reading and Composition"[R] ("CIRC") is a comprehensive reading and writing program for students in grades 2 through 8. It includes story-related activities, direct instruction in reading comprehension, and integrated reading and language arts activities. Pairs of students (grouped either by or across ability levels) read to each other, predict how stories will end, summarize stories, write responses, and practice spelling, decoding, and vocabulary. Within cooperative teams of four, students work to understand the main idea of a story and work through the writing process. The "CIRC"[R] process includes teacher instruction, team practice, peer assessment, and team/partner recognition. A Spanish version of the program was also designed for grades 2-5. Eleven studies reviewed by the What Works Clearinghouse (WWC) investigated the effects of "CIRC"[R]. Two studies (Bramlett, 1994; Skeans, 1991) were quasi-experimental designs that met WWC evidence standards with reservations. The remaining nine studies did not meet WWC evidence screens. Based on the two studies that met WWC standards, the WWC found no discernible effects in the comprehension domain. (Contains 11 footnotes.) [The following two studies are reviewed in this intervention report: (1) Bramlett, R. K. (1994). Implementing cooperative learning: A field study evaluating issues for school-based consultants. Journal of School Psychology, 32(1), 67-84; and (2) Skeans, S. E. S. (1991). The effects of Cooperative Integrated Reading and Composition: Fidelity of implementation, and teacher concerns on student achievement. Dissertation Abstracts International 53(02), 0455A. (UMI No. 9217026).]