In some cases the choice of textbook is not in the hands of the professor, rather it is decided on a departmental or higher level. Many instructors want to use a text of their own choice. This leads to situations where there is an official textbook for a course that is never used. The instructor then recommends the book which will be used, or provides notes to students. I am curious how many courses actually require students to purchase the 'required' text.
|