Placement tests are just that, for placement into the correct level of class according to your ability. As my son described it, you're terribly exhausted from BCT, then they put you in a room and set a math (or other) test in front of you. He spent 15 minutes on the test then took a nap. If you do well, you are placed into higher level courses, otherwise, lower level. Either is fine, just skipping some allows for additional courses later. Don't spend your time studying for these tests. Enjoy your last semester of high school and time with your friends. Soon you will be working very hard, don't make that come sooner. You probably would be better off spending your time running than studying, it will make BCT a little easier