We present an aggregation scheme that increases power in randomized controlled trials and quasi-experiments when the intervention possesses a robust and well-articulated theory of change. Intervention studies using longitudinal data often include multiple observations on individuals, some of which may be more likely to manifest a treatment effect…

Interest in variation in program impacts--How big is it? What might explain it?--has inspired recent work on the analysis of data from multi-site experiments. One critical aspect of this problem involves the use of random or fixed effect estimates to visualize the distribution of impact estimates across a sample of sites. Unfortunately, unless the…

The purpose of this paper is to outline and explain the evaluation system used by the Rhode Island Department of Education to measure the effectiveness of compensatory education programs. An exposition of how relevant background, program and financial information is collected is presented. In addition, a delineation is made of the methods…

This report describes the construction and use of a conceptual framework and procedures for a program-fair, comparative, classroom-focused assessment of 4 kindergarten reading readiness (KRR) programs in kindergarten classes of 115 school districts. Instructional program information systems were developed to provide the means to aggregate and…