An evaluation of the 1988 implementation of New York City's 29-day-long Summer Kindergarten program for children entering first grade with little or no kindergarten experience is presented. A total of 9,444 children were enrolled in 436 classes in 171 schools located in 32 community school districts. The program ran from 8:30 AM to 2:30 PM, Monday through Friday, and included breakfast, lunch, and snacks. Each classroom of 22 children was staffed by a teacher and an educational paraprofessional. A sample of 32 schools was randomly selected from the participating schools. Data for the evaluation were collected in a variety of ways. Any information that was available for the entire population of students or staff was analyzed and included in this report. Findings suggest that, given the short time available for planning and setting up classrooms and an unexpectedly large enrollment, the program was well implemented. Most program staff had had previous early childhood experience. Classroom activities were largely experiential. Over 95 percent of the parents believed the program had helped their children grow academically and socially. Sections of the report concern background, program administration, the children, the staff, the classrooms, parent involvement, child and family case studies, conclusions and recommendations. A checklist is appended for use in assessing the developmental appropriateness of classrooms. (RH)