Table: conference_schools
Columns: school
location
mascot
enrollment_12_13
ihsaa_class
ihsaa_class_football
county
year_joined
previous_conference

Question: Which year did park tudor school join IHSAA class AA?
SQL: SELECT "year_joined" FROM conference_schools WHERE "ihsaa_class_football" = 'aa' AND "school" = 'park tudor'

Question: Which IHSAA class does speedway school belong to?
SQL: SELECT "ihsaa_class" FROM conference_schools WHERE "school" = 'speedway'

Question: Which ISHAA school joined in 2012 and has a mascot of the panthers?
SQL: SELECT "ihsaa_class" FROM conference_schools WHERE "year_joined" < 2012 AND "mascot" = 'panthers'