CREATE TABLE enroll (stu_num VARCHAR(255), class_code VARCHAR(255)); CREATE TABLE CLASS (class_code VARCHAR(255), crs_code VARCHAR(255)); CREATE TABLE student (stu_gpa INTEGER, stu_num VARCHAR(255))
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'