Upper, middle, and lower quartile cross-sectional and longitudinal trendlines from fall 1971 to spring 1978 for all subtests of the Metropolitan Achievement Test Battery : : grades 2, 4, 6, and 8 ; January 24, 1979 / / David H. Hoffman; Office of Planning and Budget; Department of Planning, Research, and Evaluation; Office of Instruction Program Evaluation/Testing.