From personal experience would have to say its great entertainment watching the teacher going nuts @ a tv, trying to decipher why the tv sound is on 100% and turning off and on. All this from a cheap micro universal tv remote.

http://cgi.ebay.com.au/B29N-Mini-Universal-Micro-Remote-Control-for-TV-Set_W0QQitemZ220435896997QQcmdZViewItemQQptZAU_Television_Accessories?hash=item335300daa5&_trksid=p3286.c0.m14&_trkparms=65%3A1|66%3A2|39%3A1|240%3A1318|301%3A1|293%3A1|294%3A50

ok in elementary school I found these fake display chocolate bars and left them on the teachers desk before recess. She thanked however it was who had placed them there, but was not so happy later wanting to know the "culprit"

Get online and find a english to binary or some other language no one knows and make flash cards/or learn to say common words and when the teacher states that he/she can not understand you say " I not speck anyone anglash " and keep doing it the rest of the school year or untill they send you to a new class or contact your parent then cease to do so and get the class to go along with you to get the teacher fired