Achievement tests may be either norm-referenced or criterion-referenced. The norm-referenced test indicates an individual's proficiency level with respect to other individuals. A criterion-referenced test measures an individual's performance with respect to a specific level along the continuum of attainment. Further, an achievement test may be…

One of the most pressing needs in education today is the adaptation of instruction to individual characteristics and background. The Individually Prescribed Instruction project (IPI) of the University of Pittsburgh represents an investigation into the requirements for and the problems encountered in developing a system for individualizing…