Intelligent Design is consistent with creationism or evolution. Evolution (the opposite of creationism) could have occurred with or without an intelligent designer. The opposite of intelligent design is atheism. A course that explores the probabilities of intelligent design and atheism, indoctrinating neither but exploring and testing on both neither favors nor disfavors religion, and thus is constitutional. It is wise to teach such a course in the senior year of high school because it will teach students to think.