This paper describes a continuous evaluation system, data-based program modification (DBPM), which has demonstrated technical adequacy, logistical feasibility, and instructional effectiveness. Use of DBPM is highlighted in a case study, and the DBPM software package that stores, summarizes, analyzes, and displays a graph of student performance…

Traditional diagnostic approaches with handicapped and nonhandicapped children usually occur outside the instructional context and focus on the learner. Accurate conclusions about the learner, however, can only be reached after an adequate diagnosis of instruction. (Author)

The Chapter 1/P.S.E.N. Remedial Reading and Mathematics Program of the New York City Board of Education Division of Special Education was designed to provide supplementary instruction to eligible English-speaking and limited English-proficient students in self-contained special education classes. A secondary goal was to provide orientation and…