CREATE TABLE table_19422 ("School Year" TEXT, "Class A" TEXT, "Class AA" TEXT, "Class AAA" TEXT, "Class AAAA" TEXT, "Class AAAAA" TEXT)

Name the number of class aaaaa for 1988-89
SELECT COUNT("Class AAAAA") FROM table_19422 WHERE "School Year" = '1988-89'
SELECT COUNT("Class AAAAA") FROM "table_19422" WHERE "School Year" = '1988-89'