As I prepare for the spring semester, I find myself weighing the costs and benefits of using rubrics. I know they are the big buzz among education folks, but my previous attempts to use them fell flat. My students are so literal that if something wasn't specifically covered on the rubric, they would argue that I couldn't consider it when grading. I'm not sure if rubrics do more harm or good.
What do you think? Do you use (and like using) rubrics? Why? Why not? What are the keys to developing good rubrics that don't hem you in?