Quote: some schools will charge you money for flying hours once you start the engin:, and that is PURE stealing. you should only pay from take-offs till landings, the start-up and taxi time should be free(you will write these time as a flight time on your log-book which is good).
every school I have been charge you from engine start to engine stop. Of course, you have to pay the instructor for sitting with you in the airplane, unless you want to steal his time.
Free taxi time? never heard about it in any of my training.