This document provides the final evaluation report of the language development component of the Columbus, Ohio, Public Schools' Chapter 1 All-Day Kindergarten Program for 1989-1990. The overall goal of the program was to prepare underachieving kindergarten children for first grade. A total of 17 teachers in 17 elementary schools participated in the program. Each teacher taught two groups, and each group was limited in size to 15 pupils. Information collected on the Pupil Census Forms indicated that the program served 565 pupils for an average of 13.8 hours of instruction per week. The average daily membership in the program was 481.9 pupils. The data indicated that 265 of the pupils tested gained 3 normal curve equivalent (NCE) points or more in total reading for the instructional period, while 279 gained 3 NCE points or more in oral comprehension. The average NCE gain on the total reading test was 24.7. The average gain on the oral comprehension test was 18.4. These numbers represented a gain of more than one and a half times the expected rate of progress for the areas assessed. An objective concerning the documentation of parent involvement in reading activities in the home was not met. It is strongly recommended that an improved program be continued in the 1990-1991 school year. Related forms and materials are appended. (RH)