Measuring the Effects of Schooling

A simple model to measure the effects of innovation and schooling is proposed. Using a synthesis of 134 meta-analyses, it is demonstrated that educational innovations can be expected to change average achievement outcomes by .4 standard deviations and affective outcomes by .2 standard deviations. The implications of this model are discussed and the major critical determinants of effective education relate to factors under the control of teachers and students rather than to home, curricula or administrative effects.