For many young aspirants dreaming of serving the nation, the National Defence Academy (NDA) is the gateway to a prestigious career in the Indian Armed Forces. If you're determined to join the NDA right after your 10th class, starting your preparation early can give you a significant advantage. Here's what you need to know about NDA coaching after 10th class. Before diving into coaching, it's essential to be aware of the NDA eligibility criteria. The NDA exam is open to male candidates who are unmarried and between the ages of 16.5 and 19.5 years. Candidates must have completed their 12th class or equivalent education with Physics and Mathematics (for the Air Force and Navy wings).