How much Enrollment has an IHSAA Class of aaaaa, and a Mascot of spartans?
CREATE TABLE "membership" (
  "school" text,
  "location" text,
  "mascot" text,
  "enrollment" real,
  "ihsaa_class" text,
  "num_county" text
);
SELECT COUNT("enrollment") FROM "membership" WHERE "ihsaa_class"='aaaaa' AND "mascot"='spartans';