CREATE TABLE table_79394 ("School" TEXT, "Location" TEXT, "Mascot" TEXT, "Enrollment" FLOAT, "IHSAA Class" TEXT, "IHSAA Football Class" TEXT, "# / County" TEXT)

What's the IHSAA Football Class in Decatur with an AAA IHSAA class?
SELECT "IHSAA Football Class" FROM table_79394 WHERE "IHSAA Class" = 'aaa' AND "Location" = 'decatur'
SELECT "IHSAA Football Class" FROM "table_79394" WHERE "IHSAA Class" = 'aaa' AND "Location" = 'decatur'