Results of the 1990-91 product evaluation of the Saginaw, Michigan School District's state-funded prekindergarten program are reported. In 1990-91, the program served 285 pupils enrolled at 8 sites. The purpose of the program is to provide at-risk 4-year-olds with an environment that will enable them to develop school readiness skills. The Piaget-based program involves seven component areas, including cognitive, psychomotor, affective, parent participation, curriculum, staff development, and community collaboration components. The major outcome question was: Did the program attain the objectives it set out to accomplish? To answer this question, evaluators used: (1) the Prekindergarten Saginaw Objective Reference Test (PK-SORT); (2) the Affective Rating Scale; (3) a Parents as Partners Sheet; and (4) records. Findings indicated that the program met 9 of the 13 PK-SORT objectives, all seven of the affective objectives, all 3 of the parent participation objectives, and all 3 of the objectives for curriculum, community collaboration, and staff development. Recommendations for program improvement are offered. Appendixes include a description of the program, a copy of the Prekindergarten Saginaw Objective Reference Test, and related items. (BC)