The Prekindergarten Head Start (PKHS) program employed five different instructional models: Bank Street (BS), Behavior Analysis (BA), Montessori (M), Open Classroom (OC), and Responsive Learning (RL). All program components: education, social service, health and nutrition, staff development, and parent involvement performed as expected. Data from classroom observations indicate activities involving the following developmental categories were most often addressed: social interaction/rapport, language/vocabulary, and fine motor manipulation. A comparison of the developmental status (as reported on the Developmental Behavior Checklist) of PKHS children with the total prekindergarten population showed PKHS children performed successfully on the same or a greater number of items than the total prekindergarten population. Seventy-four percent of the PKHS population received physical exams and developmental histories. Social service workers made 6,030 family contacts focusing on attendance and recruitment. Approximately 85% of the PKHS Instructional staff attended staff development workshops. Respondents indicated that the workshops had greatest impact in two areas: basic skills and suspected child abuse and neglect. Seventy-eight percent of 565 parents attended at least one meeting, activity, or workshop during the year. All data collection instruments are appended. (Author/CP)