A simple, tightly focused student survey can help teachers quickly home in on areas to improve—but you need to be fully prepared to make changes. A few weeks into each semester, Gayle Golden asks her University of Minnesota journalism students to answer a few brief, anonymous questions about the course she teaches. After examining responses, she discusses the results with her students during the next class. “She tells them which suggestions she plans to put into practice, which recommendations she can’t act on, and why…