Relationship of Elementary and Secondary School Achievement Test Scores To Later Academic Success

This study investigated the relationship between achievement test scores on the ITBS and ITED and academic success (high school and college grade point average). The basic population consisted of approximately 2000 students who entered the University of Iowa as freshmen in 1977. Scores on high school achievement tests adminis tered in grades 9, 10, 11, and 12 and on elementary achievement tests administered in grades 4, 6, and 8 were obtained for a sub stantial portion of this population, along with high school and col lege freshman grade point averages (GPAs). Correlations between these achievement test scores and GPAs were similar to those re ported for tests of the college entrance type. This study provides support for the predictive validity of the ITBS and ITED achieve ment test batteries.