This document described Project CHILD, a program of educational change and curriculum development for disadvantaged prekindergarten and kindergarten children. The historical part of this report indicates that the project began in 1966 with a small-scale study of teacher behavior and children's responses in a few classrooms in a Harlem school district. This study led to the development of a reserach instrument and suggested the overwhelming need for program improvement. In 1966-'67 the curriculum was compiled in rough form and implemented on a very limited basis. Data from this period focuses on language development, a major emphasis of the curriculum. 1967-'68 was a year of broadening the implementation effort, as four teachers used the program with in-depth training. The curriculum was revised during this year, as it became a 2-year intervention approach. The field study was backed up by much data collection, including a detailed project to determine intervention effects on auditory discrimination. By 1968-'69 the program had developed a comprehensive curriculum package, and the report focuses on problems encountered in changing teachers' methods and attitudes. A content analysis of the curriculum discusses internal inconsistencies on theoretical issues, language arts training, views of play, teaching strategies, motor development, and behavioral objectives. Appendix A is an independent assessment of the curriculum, Appendix B describes the goals, procedures, and history of the parent project, and Appendix C is a description of the curriculum prepared for an educational conference. (DP)