The Moral Sense Test is a Harvard University web-based study into the nature of moral judgments. The test is a series of moral dilemmas that purport to analyze the psychology behind our moral judgments. The site notes that the study "has been designed for all humans who are curious about that puzzling little word 'ought' — about the principles that make one action right and another wrong."
Some of the dilemmas in the test might be useful to use when talking about moral philosophy with pre-college students, and it would be interesting to discuss the test in general with students. Can a test like this really help us decide why some actions are right and others wrong? Anyway, taking the test doesn't take much time and is kind of fun!