SELECT DISTINCT T1.lastname FROM list AS T1 JOIN teachers AS T2 ON T1.classroom  =  T2.classroom WHERE T1.grade  =  3 AND T2.firstname != "COVIN" AND T2.lastname != "JEROME"
Find the last names of the students in third grade that are not taught by COVIN JEROME.
SELECT DISTINCT T1.lastname FROM list AS T1 JOIN teachers AS T2 ON T1.classroom = T2.classroom WHERE T1.grade = 3 AND T2.firstname ! = `` COVIN '' AND T2.lastname ! = `` JEROME ''
select distinct t1 . lastname from list as t1 join teachers as t2 on t1 . classroom = t2 . classroom where t1 . grade = value and t2 . firstname ! = value and t2 . lastname ! = value
Find the last names of the students in third grade that are not taught by COVIN JEROME .