Krystal,
Good input. Pre- and post-tests can tell us all a lot. As instructors/facilitators we want to determine if our students are learning and if not, what we need to do to improve the learning process.
Also, pre-tests are helpful as a diagnostic test to see what the students already know. I have used pre-tests to determine how quickly I can cover material or how slowly I may need to explore new content.
Thanks!