user: Question: Who was the Class AAAA champion in 2006-07?
Columns: ['School Year', 'Class A', 'Class AA', 'Class AAA', 'Class AAAA', 'Class AAAAA']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1988-89', 'Plains', 'Shallowater', 'Bishop', 'Port Neches-Groves', 'McAllen']
SQL:

assistant: SELECT "Class AAAA" FROM "Table" WHERE "School Year" = '2006-07';