This paper illustrates how to design an experimental sample for measuring the effects of educational programs when whole schools are randomized to a program and control group. It addresses such issues as what number of schools should be randomized, how many students per school are needed, and what is the best mix of program and control schools.
A Manual for Qualitative Data Management and Analysis
New Directions in Evaluations of American Welfare-to-Work and Employment Initiatives
Methodological Lessons from an Evaluation of Accelerated Schools
The Effects of Program Management and Services, Economic Environment, and Client Characteristics