Does the subject want to ask "which classes in Qingyuan Middle School are key classes"? 1 class, class 5. Qingyuan Middle School was established in April, 1942. 1980 was named "provincial key middle school" by the provincial education department. The key classes announced by official website School are 1 Class and Class 5. These two classes are set up to improve students' learning enthusiasm and cultivate students' higher grades.