The All Day Kindergarten Program was instituted in the Columbus Public Schools in January, 1972, for the purpose of providing a full day of instruction for underachieving kindergarten pupils. The 1982-83 program goal was that the average language/reading growth of pupils in program attendance for at least 80 percent of the instructional period would increase 1.5 normal curve equivalent (NCE) points for each month of instruction (10.5 NCE points for the 140 days of instruction). The evaluation design called for data collection in five areas: Education Consolidation and Improvement Act (ECIA) Chapter 1 pupil census, standardized achievement test (Language Survey Test of the Metropolitan Achievement Tests), ECIA Chapter 1 teacher census, parent involvement, and inservice evaluation. The program served 407 pupils, of whom 271 met the two criteria for inclusion in the evaluation sample: 80 percent attendance, and administration of both the pretest and the posttest. The average gains of 21.3 NCE points in language is more than two times the objective of 10.5 NCE points. Data on inservice education and parent involvement indicated that those program objectives were also met, and survey instruments for teachers, parents, and observers conclude the document. (BW)