CREATE TABLE table_19561 ("School Year" TEXT, "Class A" TEXT, "Class AA" TEXT, "Class AAA" TEXT, "Class AAAA" TEXT, "Class AAAAA" TEXT)

How many class AA in the year 2002-03
SELECT COUNT("Class AA") FROM table_19561 WHERE "School Year" = '2002-03'
SELECT COUNT("Class AA") FROM "table_19561" WHERE "School Year" = '2002-03'