The Southwest Regional Laboratory (SWRL) has developed and initially field tested during summer 1969 a Summer Reading Program (SRP) designed to prevent the decrement in kindergarten children's academic achievement caused by the lack of instruction and practice during the summer. Each parent supervised his child at home in structured reading practice. The parents of 183 of the 244 kindergarten children in the SWRL First-Year Reading Program agreed to participate. Two schools in a third urban Southern California district were intentionally selected on a post facto basis to obtain a comparison group of 30 subjects . A package of structured guidelines for the parents and ten sets of pupil materials (one per week) were mailed to each participant. The guidelines explained the organization and schedule for the program and described specific procedures to be used by parents in applying the various materials. Sources of transactional and achievement data included the pretest and posttest for the program, the SRP Rating Sheet, and the Weekly Record Sheets. Post-summer achievement by the children was found to be higher than their pre-summer performance, an encouraging reversal of the normal trend. (JM)