SELECT count(*) FROM list AS T1 JOIN teachers AS T2 ON T1.classroom  =  T2.classroom WHERE T2.firstname  =  "TARRING" AND T2.lastname  =  "LEIA"
Find the number of students taught by TARRING LEIA.
SELECT count ( * ) FROM list AS T1 JOIN teachers AS T2 ON T1.classroom = T2.classroom WHERE T2.firstname = `` TARRING '' AND T2.lastname = `` LEIA ''
select count ( * ) from list as t1 join teachers as t2 on t1 . classroom = t2 . classroom where t2 . firstname = value and t2 . lastname = value
Find the number of students taught by TARRING LEIA .