An alternative method of identifying effective schools, based on the concept of effective schools as statistically atypical, was tested. This paper investigates the issue of consistency of the identification of what is termed "exceptional" schools. The following tests were administered to all first through fourth graders in 431 schools…

The accuracy of trait estimates obtained from three vertical equating methods was examined. The procedures studied included two anchor test designs and a single-group design. Data from two content areas and two grade combinations were studied. A three-parameter logistic model was used to perform the equatings. The results obtained were used to…

Self-directed, or independent study activities were studied in adolescents, as well as their antecedents and consequences. The interrelationships, across age and grade, of several variables were described; i.e.: course requirements and conditions, student characteristics, study activities, and school achievement. First, autonomous learning…