CREATE TABLE table_19456 ("School Year" TEXT, "Class A" TEXT, "Class AA" TEXT, "Class AAA" TEXT, "Class AAAA" TEXT, "Class AAAAA" TEXT)

Name the total number of class aaa for 2006-07
SELECT COUNT("Class AAA") FROM table_19456 WHERE "School Year" = '2006-07'
SELECT COUNT("Class AAA") FROM "table_19456" WHERE "School Year" = '2006-07'