The inherent methodological problem in conducting research at multiple sites is how to best derive an overall estimate of program impact across multiple sites, best being the estimate that minimizes the mean square error, that is, the square of the difference between the observed and true values. An empirical example illustrates the use of the…

This report examines the educational opportunities offered by specially funded comprehensive secondary schools established in Israeli development towns during the 1960s. The results of an analysis of the 1980-81 academic year budgets of 51 schools in 26 towns, and an examination of the schools' absorption of students and their holding power, are…