I wonder why they are in small mixed at other comps. When I saw them at Decatur Central they had a good amount of people in their group. Maybe other competitions base it off of school size instead of group size?
Pike does their divisions by group size. Last year, Lawrence North only had 36 members and had to compete in Tier II at Pike while competing in the top division everywhere else. This year, LN are at 46 and can compete in the Large Mixed Division. Roncalli has a fairly large group for a small school, which puts them in the Large Mixed Division here.