I agree, "Strong Magic" is a great book, "Absolute Magic" by Derren Brown is another good one of the like. Anyways, someone said something about how if you are getting these reactions then you are not "good enough". I just want to say that I completely disagree. The thing is this, if you are performing in school, then you are performing for a crowd that is already competing with each other for attention. Therefor, they don't want other people stealing their thunder. That said however, not everyone is always wanting the spotlight, but school is not the best place to perform. These hecklers are feeling insecure and or challenged...however there is also the factor that they can steal your thunder and feel smart and recieve credit for knowing the method or source of your method and that has nothing to do with you or how you are presenting it, but it has more to do with the fact that they think they can win the approval of the group with their knowledge. They feel that they can use this opportunity to demonstrate a higher self value and it has nothing to do with you, these selfish people just see it as an opportunity for themselves. No worry though, this will often backfire. At any rate, it is out of the magician's control, this brand of heckler is out there, although these people are few and far between. They are out there and no matter how good you are you will encounter them, and the best piece of advice I could give you is if they want the attention. Well, then put the attention on them. Say, ok, Mr. Smarty Pants....YOU entertain us. That will usually shut them up pretty quickly. Take note of these people and don't perform for them again. They are a waste of time and they don't appreciate magic