Describes the Philadelphia Public Schools' formative testing program, used to diagnose students' difficulties under mastery learning, especially in mathematics. Discusses in turn the classroom, school, and district aspects of the program and summarizes the program's essential features. A full-page chart outlining aids and hindrances to formative…

This study examined the consistency of classification for a sample of special needs students on the state-mandated Massachusetts Basic Skills Inventory (BSI). The study sample consisted of 172 special education students (114 males and 58 females) from 15 elementary schools in a large urban school district in Massachusetts, who took the…

The placement and diagnostic tests used in instructional systems designed to be adaptive to the individual learner's characteristics are examined. The necessity of pretesting students before instruction is questioned. According to the author, both the necessity for and the content of the Individually Prescribed Instruction (IPI) type of pretest…