Everyone is automatically admitted to the Hard Knocks Academy (a.k.a., the School of Hard Knocks) whether they like it or not, and regardless of the amount of effort they may have most thoroughly and diligently expended into earning an expulsion.

To this day, our records reveal that no student has ever been expelled, including the greatest of pranksters, so our word to the wise is:  Don't even bother trying because you'll just be wasting your time - and ours (primarily because we can't find the paperwork which faculty suspect was misplaced by the founders amidst a rather dramatic legal dispute concerning the right to teach Murphy's Law, the outcome of which was favourable to the Hard Knocks Academy).

"Study hard what interests you the most in the most undisciplined, irreverent, and original manner possible."
-- Richard P. Feynman