The effective school's perspective for evaluating educational programs is not a scientific but rhetorical reform model. Definition of effective schooling must include school-wide and continuing achievement gains. Effective schooling research is geared toward educational policy. Effective schooling research should instruct administrators and…

An explicit model identifying 10 relevant components of achievement gain scores has been developed. Based on that model, all students under consideration are stratified according to individual observed pretest score, and achievement gains are measured relative to the average and range of gains among students in the same prescore stratum. The…