LORIA ONDERSMA สอนนักเรียนกี่คน?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many students does LORIA ONDERSMA teaches?It is not neccessary to use all the tables.
 list:  (classroom [ VARCHAR) ]
SELECT COUNT(*) FROM list AS T1 JOIN teachers AS T2 ON T1.classroom = T2.classroom WHERE T2.firstname = "LORIA" AND T2.lastname = "ONDERSMA"