CREATE TABLE table_43456 ("School Year" TEXT, "Class A" TEXT, "Class AA" TEXT, "Class AAA" TEXT, "Class AAAA" TEXT, "Class AAAAA" TEXT)

If Class AAAA is Schertz Clemens and SChool Year is 1987-88, what is Class AA?
SELECT "Class AA" FROM table_43456 WHERE "Class AAAA" = 'schertz clemens' AND "School Year" = '1987-88'
SELECT "Class AA" FROM "table_43456" WHERE "Class AAAA" = 'schertz clemens' AND "School Year" = '1987-88'