This pretest report on the National Head Start Evaluation Project gives data on ethnicity and ages of children enrolled in four Head Start centers in Oklahoma, New Mexico, and Arizona, and describes the present status of evaluation at these centers. Completed pretests, proposed evaluation instruments, and available pretest data are presented.…

The accuracy with which regression models estimate treatment effects is dependent upon a number of conditions. The stability of the regression line (a function of sample size and correlation between pretest and posttest) is said to be the most important of these conditions. The utility of regression models is proportional to the size of the…

An integral part of Title I of the Elementary and Secondary Education Act programs has been the evaluation of these programs in terms of attainment of increments of gain in reading and mathematics. One of the most widely used methods of analyzing pre and post test norm referenced data has been the six-step historical regression procedure. This…