Database: computer_student
Question: Among the courses that are basic or medium undergraduate courses, how many of them are taught by a faculty member?
SQL: SELECT COUNT(*) FROM course AS T1 INNER JOIN taughtBy AS T2 ON T1.course_id = T2.course_id INNER JOIN person AS T3 ON T2.p_id = T3.p_id WHERE T3.professor = 1 AND T1.courseLevel = 'Level_300'