To assess the impact of the Follow Through program in Prince George's County, Maryland, data from five sources were collected and compiled. Participating kindergarten and first grade teachers submitted test scores from two readiness measures administered on a pre- and posttest basis for the children involved. Reports from specialized personnel indicate the kind and quantity of services provided: the psychologist, who was employed on a part-time basis, evaluated sixteen children and initiated evaluation procedures for six children; the social workers rendered services to benefit 1,848 persons; school health workers attempted to meet the needs of 226 children through screening tests, referrals and an immunization program; parent helpers described weekly classes and activities which were geared to advancing parents' personal, school, and community interests. Parent program content and parent attendance records are separately listed. A list of field trips and visitations in which parents participated is also provided. Children's gains in readiness were indicated by test scores on both test instruments. Total program effects were deemed beneficial and four recommendations for improving future programs are made. (WY)