This ignorance factor is important in avoidance. If you frequently get given things to do, that you don't want to do, in the bulletin, then turn up a bit later than normal for registration, and don't read the bulletin. That way, when you are asked why you didn't go to practice X, Y or Z, you can say, with absolute truth, that your teacher didn't read you the bulletin that morning. The fact that they read it to the rest of the class is neither here nor there.
Advanced techniques: WARNING! This is an example of advanced
Avoidance techniques, and should not really be attempted without
significant amounts of practice in keeping a straight face. If you
know a teacher is looking for you, try and find them. Ask lots of
teachers if they know where your quarry is, and make it seem VERY
important, to add validity to your tale. This keeps you moving from
place to place (Remember, never stop moving), which actually reduces
the chance of finding the teacher. If you don't find them, you will
probably meet in your next lesson with them. Say that you were
looking for them, but didn't find them. Hopefully, those teachers you
spoke to whilst attempting to locate them will, if you make it seem
important enough to them (being out of breath helps), have told your
teacher that you were looking for them. This will inevitably make
them believe you, and they will think that you weren't trying to
avoid them.
But they may find you. This is the really dangerous bit, kind of like
Russain Roulette. Let them ask whatever question they inevitably want
to ask you, and in response, say the absolute opposite of the truth,
but take out every other word of the sentence, and say what you are
left with in an authoritative way. It will make no sense, and will
dazzle and confuse the teacher. They will get into an arguement with
you as they become convinced that they are deaf or that you are
trying to piss them off. They will (hopefully) storm off in a rage of
disbelief at your stupidity, but will (maybe) have forgotten about
what it was they wanted to ask you.
This is very risky to try, so only use it as a last resort. I mean
it. And don't blame me if you get into shit doing any of this,
because you've got to be pretty damn stupid to try.