user: Question: What kind of IHSAA Class has a School of Decatur Central?
Columns: ['School', 'Location', 'Mascot', 'Enrollment', 'IHSAA Class', 'County', 'Year Joined', 'Previous Conference']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'real', 'text']
Sample row: ['Decatur Central', 'Indianapolis, IN', 'Hawks', 1856.0, 'AAAAA', '49 Marion', 2006.0, 'Conference Indiana']
SQL:

assistant: SELECT "IHSAA Class" FROM "Table" WHERE "School" = 'Decatur Central';