To correct for measurement error in the correlation of student status with achievement gain, the simplex model was used. Results supported the authors' hypothesis that status and gain are correlated. Students who start out as low achievers may need more help over time to maintain the same academic growth as higher achievers. (Author/MV)

Designed for junior high and high school students and their parents, this brochure explains the structure, function, and method for interpretation of the Iowa Tests of Basic Skills and the Sequential Tests of Educational Progress. A question and answer format is used to provide information on scope and purposes of the tests, meaning and accuracy…