Assessing the Impact of the Implementation of an Interim Assessment System on the Achievement Scores of Students on the Illinois Standards Achievement Test

David Ballard, Olivet Nazarene University

Ed.D. dissertation completed in 2011 for Olivet Nazarene University.


This study examined the impact of an interim or benchmark assessment system (Acuity) on the reading and mathematics scores from one school district on the Illinois Standards Achievement Test over a three year period. Data analyses performed demonstrated statistically significant (p <.005) results for each cohort examined as part of the study. In addition to statistically significant results, Cohen‟s d calculations, which provided a measure of practical significance, demonstrated moderate to strong effect sizes for the majority of analytical comparisons conducted by the researcher. The study design and limitations failed to determine causation for these results, but it is clear that students learned during this time and the results confirm assertions from current professional literature regarding interim assessments.