Dear Kiran
Please make sure you get your priorities right before you step into a career where you'll have to spend about 25-30 lakhs out of your own pocket for the education. A job as a pilot also depends heavily on your physical condition so please get it checked and get a Class 1 medicals as soon as possible.
A 17 yr old school goer in india is relatively unable to take his own decisions so please talk to your parents with all the points you can collect from forums such as this
Regards and all the best
Haree