Now in the 17th year of operation, this project is a laboratory program designed to provide remedial instruction to improve the achievement in reading and/or mathematics skills of children who test in the lowest quartile in these areas. Classroom and laboratory teachers work closely together to identify potential program participants and formulate a laboratory schedule that does not cause any child to miss either reading or mathematics in the regular classroom. The key features are: (1) instruction takes place in colorful, well-equipped laboratories; (2) professional teachers offer the greater part of the instructional program; (3) staff members are part-time; (4) one teacher is responsible for a limited number of students; (5) children participate in daily half-hour sessions on a ratio of about three students per teacher, devoted strictly to the instruction of unmastered skills; (6) students work at their own pace on materials geared to their own diagnosed needs and abilities; (7) pupils work with materials different from those used in regular classrooms; and (8) student progress is measured by continuous diagnostic testing, as well as pre- and post-testing on normative instruments. (Author/MP)