The evolution of the two-stage cluster sampling plan is described, as are the instruments used to collect survey data from principals, teachers, specialists, and parents. Particular attention is given to the Classroom Activities Log, a unique teacher-completed instrument which provides a complete description of daily student experiences.…

A detailed description is provided of the variable information acquisition (IA), which is part of the analysis in phase I of the Evaluation of Practices in Individualized Schooling. The variable is defined; the questionnaires on which the variable is based are listed; the procedures used to scale the variable are explained; the distribution of the…

Data on two preschool intervention programs for children from low-income families are discussed. The first program, the Karnes Preschool Program for the amelioration of learning deficits, is characterized by a structured format based on psychological theories. Its curriculum is designed to develop the basic language processes and to teach content…