The Evaluation System of the District of Columbia Public Schools has several purposes. It is designed to enable the school system to evaluate the effectiveness of programs and to identify characteristics of programs that seem to increase effectiveness. Also, it is designed to enable the schools to follow particular students over a period of years, to examine long-term effects of different programs, and to measure changes in program characteristics from year to year. The design of the Evaluation System is such that analyses or evaluations can be done at a number of levels: the individual student, the classroom, the school building, the grade level, the program, the region, and the overall school system. Evaluation System data were collected systemwide for the first time in grades one through six in June 1982. Various data on 40,740 students were received from 1,528 elementary school classroom teachers. Data are reported here on the reading and mathematics instructional materials used, special student needs, student attendance, and student achievement. (PN)