The Chicago Public Schools have been developing and implementing a citywide instructional program of continuous progress/mastery learning in reading. It includes the delineation of a K-8 continuum of instructional objectives; a criterion-referenced testing program which serves as the basis for instruction, promotion, and administrative monitoring;…

Describes the instructional materials and features that distinguish the Chicago model of mastery learning instruction from other models of mastery learning. Also describes innovative ways to examine the effects of mastery learning instruction, given that school data often are limited to norm referenced tests and are lacking in controls. (Author/GC)