Delaware Military Academy อยู่ในลีกใดไม่จำเป็นต้องใช้ตารางทั้งหมด
What league does Delaware Military Academy belong toIt is not neccessary to use all the tables.
 table_15475116_1:  (league [ VARCHAR ] school [ VARCHAR) ]
SELECT league FROM table_15475116_1 WHERE school = "Delaware Military Academy"