A longitudinal study to determine the conditions surrounding the integration of Negroes, Mexican Americans, and Anglos in the Riverside Unified School District in Riverside, California, began in school year 1965-66. The sample included students in kindergarten through grade 6. A sample of kindergarten students was added to the original sample during the 1968-69 school year. A series of test batteries measuring achievement-related attitudes was administered to the entire sample. Attitude measures included (1) an ethnic pictures test, (2) a delay-of-gratification test, (3) a dissonance reduction test, (4) field dependence-independence as measured by an adaptation of Witkin's (1954) rod and frame test, (5) aspiration level as measured by a ring toss game, (6) sociometric analysis, and (7) the Children's Apperception Test. Ethnic differences were reported for all attitudinal measures except delay-of-gratification. An additional survey, assessing Black militancy in the junior high school, is planned for the 1968-69 school year. A related document is ED 021 652. (TL)