Yet, since the professor is always in the role of giving out the grades, and the student must worry about his or her marks, few students are willing to take on their teachers face-to-face. "Private criticism" is seen as being relatively safe; anyone who wants to go a little farther can put out an anonymous leaflet.
但事實上，教師在課堂上擔任評分者的角色，學生在顧及學業成績下，會正面與老師起衝突的畢竟少數，「私下批評」被認為是一種較安全的做法；再激進一點，就散發匿名傳單。