Hi
One can become a Pilot after 12th in the Indian Air Force or you can also become a private Pilot also. In order to become a Pilot one needs to select Science stream in 11th and 12th with subjects Maths and Physics.

In order to become a pilot in indian air force one needs to complete 12th from science with subjects Physics and Mathematics and should be between the age of 16 years to 19 years of age. One needs to appear for NDA exam which is conducted by the UPSC board .The exam is conducted Twice every year.

For becoming a private pilot you have to join a course and earn yourself your driving license .
Hope it helps ...