Table schema:
CREATE TABLE enroll (stu_num VARCHAR, class_code VARCHAR); CREATE TABLE CLASS (class_code VARCHAR, crs_code VARCHAR); CREATE TABLE student (stu_gpa INTEGER, stu_num VARCHAR)

Question: What is the average gpa of the students enrolled in the course with code ACCT-211?
SQL: 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'