user: Question: Which IHSAA Class has a School of Mitchell?
Columns: ['School', 'Location', 'Mascot', 'Size', 'IHSAA Class', 'County']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Crawford County', 'Marengo', 'Wolfpack', 487.0, 'AA', '13 Crawford']
SQL:

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