The traditional classifications have the same number of "schools" (or as close as mathematically possible) in each of them, but not necessarily the same number of "teams" in a given sport's tournament; smaller schools are unable to support as many sport teams, although they may form cooperative programs classified by the combined enrollments of the schools involved. In order to prevent distorted tournament structures, for all sports the MHSAA uses "nearly equal divisions," where only those schools sponsoring a team in the given sport are broken into as many equally sized groupings (or as close to equal as is mathematically possible) as the Association feels is appropriate given the number of schools sponsoring the sport. The MHSAA's tournament structures are similar to those used in many other States; schools are assigned to Regions and, in those sports where it is appropriate, Districts. Assignments are made on a sport-to-sport and year-to-year basis, meaning that as no two sports have identical classification methods and sponsorship levels, a given school will usually have at least minor variations in its overall tournament path from sport to sport.