many teachers believe that the responsibilities for learning lie with the student. If a long reading assignment is given, instructors expect student to be familiar with the information in the reading even if they do not discuss it in class or take an examination. the idea student is considered to be one who is motivated to learn for the sake of learning not the one interested only in getting high grades. sometimes homework is returned with brief written comments but without a grade. even if a grade is not given, the student is responsible for learning the material assigned. when research is assigned the professor expects the student to take it actively and to complete it with practical guidance. it is the student's responsibility to find books, magazines, and articles in the library. professors do not gave the time to explain how a university library works, hey expect students particularly graduate students to exhaust the reference sources in the library.