i think there is more to it than that.... anyways lets not start with this slandering already. the reason why they dont declare that income is most probably your local mosque is a registered charity. im not too privvy on the specifics but i do know that its actually the mosque that tells them to accept cash in hand because it makes it easy for them, voluntary work with goodwill gestures. also some, ok rather very few teachers dont do it for the money, they just teach because they can and want to, to them the money is a well and truely a good will gesture. anyway its not as clear cut as some of you guys are making out. im not saying your totally off the mark as some people do exist like you claim, but some also dont.