โรงเรียนที่มีผู้ลงทะเบียน 650 คนออกในปีใด?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
In what year did the school with enrollment of 650 leave?It is not neccessary to use all the tables.
 table_23224:  "Institution" [ text]  "Location" [ text]  "Nickname" [ text]  "Founded" [ real]  "Type" [ text]  "Enrollment" [ real]  "Joined" [ real]  "Left" [ real] 
SELECT "Left" FROM table_23224 WHERE "Enrollment" = '650'