From 1970, the VHSL's member schools were organized into three group classifications based on enrollment: A, AA, and AAA. Each of the three groups were split into four geographic regions, which usually contained three or four districts. District sizes vary and consist of four to eleven teams. The group of schools with the largest enrollments were in Group AAA, the group with the next largest enrollments were in Group AA, and the schools with the smallest enrollments were in Group A. Regional boundaries were different for all three groups as average school sizes vary substantially in different parts of Virginia.