A Pennsylvania school district that places in the top 15 or 20 out of 500 districts statewide based on the PSSA exams is an achievement for which students, parents, teachers and administrators can all be proud. Many view PSSA scores as a reliable predictor of future success. As a tool for student assessment, the PSSA exam helps measure and provides useful information of what students are learning. The PSSAs measure the performance of the entire class and provide of measurement of how an overall class is performing.