One thing I think we need to be careful of as instructors is to make sure we continually evaluate our methods of assessing student performance. In college I worked for a professor who had been using the same quizzes/tests/lecture notes for years, really for at least 15 years. This struck me then as lazy and now as in instructor I find it especially lazy. What a mistake! It is important to remember not every test or quiz or assignment we write is workable for the students and thus evaluation is key. I ask for student feedback and statistically look at grading patterns to make sure I am on the right track.