Thanks PWEI, so normally what student gets? ( I didnt mean to hurt with my question's ) :)
Polish students can receive 'stypendium' from the state-owned high schools - there is the 'stypendium' for low income family students (but the threshold is really low and most Polish students can't receive that type of the 'stypendium' - even if it is not restricted to Polish nationals you won't be coming below the income threshold (if you have a family who support you who live in Germany)
there is also another type of 'stypendium' which is an incentive for students to receive good grades - this is the 'stypendium za wyniki w nauce' - the threshold here is quite high (the scale of grades in Polish high schools is 2-5 and the usual threshold for receiving any money in the form of that stypendium is usually the average 4.5 (in some schools or faculties even higher) - the better the average of your grades the more money you can get but it is still not much (I'm not familiar with the present situation but you could get around 200 PLN for the best grades back in the end of the 90's )