The problem of this study was to determine whether differences exist between elementary and middle school campuses that participate in University Interscholastic League (UIL) academic activities and similar campuses that do not participate. The Texas Education Agency Academic Excellence Indicator System (AEIS) furnished data from 1993 through 1997 for this ex post facto comparative research. Using all Texas Assessment of Academic Skills (TAAS) scores for grades 3 through 8, economically disadvantaged population data, attendance rates and campus accountability ratings, 12 hypotheses and 4 research questions were addressed.