Activities for most Texas private schools are governed by separate bodies, the largest of which is TAPPS. However, private schools are allowed to join the UIL only if 1) they meet UIL's definition of a high school, 2) they are accredited by the Texas Private School Accreditation Commission, and 3) they are ineligible for membership in any league similar to UIL (such as TAPPS or the Southwest Preparatory Conference). Furthermore, private schools must compete at one classification higher than their enrollment would otherwise dictate.