i did alot worse things in highschool "i mean like seriously worse", and they never affected my post secondary education acceptance, it never even came up. First big mistake was getting the teacher to make the shirts, second was giving them the shirts you had on, 3rd was the fact you pooled all the money together and accepted the liabilty of having to deliver the shirts, you should have taken orders off school property "not mention this on school property/make any arrangements" and done shirt for cash at same time. these steps would have prevented any sort of trouble you would have had. Why expose yourself before hand to your plans up until the last second. perfect example is like a kegger in relation to this. you get someone who basically works for the cops to supply the beer, then you accept entrance fee 2 weeks in advance for the kegger and pay the guy who works for the cops the money, then you advertise all around town that your having the kegger so the cops know ahead of time whats going on so they can bust all over your little parade.