what AA class has a AAA class of commerce?
CREATE TABLE "individual_overall" (
  "school_year" text,
  "class_a" text,
  "class_aa" text,
  "class_aaa" text,
  "class_aaaa" text,
  "class_aaaaa" text
);
SELECT "class_aa" FROM "individual_overall" WHERE "class_aaa"='commerce';