AP Aptitude Test

As a cooperative effort, I wish we could somehow devise and craft a test that could be taken here on this site. It would provide results immediately as to where the test taker is on AP knowledge level. It would be a scale of sorts that could somewhat define and rate where exactly the participants AP abilities and knowledge are. It would also show the participant where his/her weaknesses are and what they need to improve on in order to get to the next level. Maybe for a start, the test would be reflective of BJ aptitude only.
The test would also automatically answer a lot of the same old questions that the newbies always ask.

Feedback please.