AP Credits

I am on a gap year right now, and have already paid my enrollment deposits. Apparently Ap scores are only eligible if the test/course was taken before the student matriculates? I have put in my enrollment deposit and I am not currently in high school. Can I still take AP tests and get credit?

http://collegecatalog.uchicago.edu/thecollege/examinationcreditandtransfercredit/#advancedplacementcredit