I would recommend staying at school and finishing year 12. It may seem a long way off now, but it will soon pass by very quickly. You are still young and have plenty of time. Once you have left school and enter the work force you will realise how grat school was for socialising.
Maybe start your flying training and when you have finished yr 12 really hook in and get all your flying done. You may decide later on that you dont want to be a pilot, and your yr 12 marks will be there to help follow a different path.
Good luck with it all.
