We had to use them for my biology class as part of attendance but we also got participation points that way as well. We had to buy them and I haven't used it since for any of my other pre req classes but I do attend a jc so it is usually smaller class sizes. I am hoping we can use it again for other classes since I did have to go out and buy one.
I graduate my ADN program in a couple weeks. We were required to buy them in the beginning also. We used them for in-class quizzes and practice questions during the first and second semesters, and zero times during the third and fourth. I actually thought they were kind of fun, I wished we would've used them more to get the money's worth.