Many of the readers of this blog have either been to graduate school or are currently in graduate school. Many others have encountered this same problem in colleges. The problem: the person in class who monopolizes all of the time with their questions, usually to prove to the prof and/or classmates how very smart they are (or who makes comments because they are sure that the prof was unaware of their very important factoid).
Of course, this doesn't apply to adult education in our churches, where often I wish people would ask more questions and make more comments in order to get discussion going. But it is a welcome relief for those grad school/college settings. I proudly present the "Question & Comment Evaluation Chart" (click for larger image). Feel free to print out and discreetly place on the desk of your classmate who needs it most.