user: Question: What IHSAA Football Class has 20 Elkhart as the county?
Columns: ['School', 'Mascot', 'Location', 'Enrollment', 'IHSAA Class', 'IHSAA Football Class', 'County']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['Elkhart Central', 'Blue Blazers', 'Elkhart', 1800.0, 'AAAA', 'AAAAA', '20 Elkhart']
SQL:

assistant: SELECT "IHSAA Football Class" FROM "Table" WHERE "County" = '20 Elkhart';