Question: What is the IHSAA Class for football for the team joining in 1968?
SQL: SELECT "IHSAA Class Football" FROM "2-18789626-1" WHERE "Year Joined" = 1968.0;

Question: What is the IHSAA class for Tipton?
SQL: SELECT "IHSAA Class" FROM "2-18789626-1" WHERE "School" = 'Tipton';