If he had half the brain he would have sorted this out even before he came here!!
Anybody who has half a brain knows that a Karta Pobytu can not be obtained before coming to Poland. It is only possible to obtain a Karta Pobytu when one is in Poland.
Imagine coming to a country and not taking into consideration such vital things as a working visa!!
A good point but one which is somewhat weakened by the fact that the original poster clearly did take a working visa into consideration and got one too, as can be seen from the fact that he is attempting to renew his Karta Pobytu.
To the original poster: the problem is that, as usual, the law is very badly worded and so there is dispute as to what is and is not a 'school'. The answer you get depends on who you speak to. Hence the problems.