The effects of students taking different levels of the same standardized achievement test were assessed by administering two levels of the same test to each student. The functional level of the test was taken by all students. The second level of testing was randomly assigned at the adjacent higher or lower level of the test. Functional level…

In 1971, a comprehensive study was made of mathematics and reading achievement in the Borough of North York, Ontario. In 1974, a replication and followup study was carried out. The purposes of the study were to replicate the 1972 study, and to obtain a measure of growth in reading and mathematics achievement between grade 3 and grade 5, over the…

In this replication of the 1972 and 1974 studies of reading and mathematics achievement in North York, Ontario, approximately 20 percent of the students at each of the proposed grade levels were included in the sampling. Again, the Metropolitan Achievement Test, the Sequential Tests of Educational Progress, and the School and College Ability Test…