theres no such rule tht u hav to give money to the instructor. but sum of them actually ask for money, n if u dont give them they wont teach u properly. when i went for my driving classes, i was asked from my instructor also, i didnt give him the money coz he asked but mostly coz hes a poor guy who was getting a very meagre salary.so if u want to give, give it for tht reason n tell him tht also.