instruction: What is the average GPA of students taking ACCT-211?
response: SELECT AVG(T2.stu_gpa) FROM enroll AS T1 JOIN student AS T2 ON T1.stu_num = T2.stu_num JOIN class AS T3 ON T1.class_code = T3.class_code WHERE T3.crs_code = 'ACCT-211'