Riverside School Desegregation Study collection is a collection of reports and newsletters that document the joint research performed in the late 1960s by the Riverside Unified School District and the University of California, Riverside on the relationship between the desegregation of public schools and emotional adjustment and academic achievements of children. The collection also includes publications and guidelines for educators placed in newly desegregated school environments.

The collection consists of materials collected by former Cottonwood teacher Esther Bergman Trunnell related to the Cottonwood School, which was a one-room schoolhouse first established in 1897 in Aguanga, California, in Riverside County. Items in the collection include public school registers, financial records, photographs, and some ephemera.