A: For-credit quizzing begins in Class 4. In Class 2 and Class
3, we'll be testing the clickers. So, if you don't have your clicker
registered by the deadline, you won't be able to find out if it's
working, but you'll get another chance in Class 3, provided the
clicker is registered by one week after the deadline. If not, then
you'll just have to hope that it's registered by two weeks after the
deadline, and is working during the for-credit quizzing in Class 4.
So all that happens is that you lose a chance to do some
troubleshooting.