Hello candidate,
Sainik School of Chittorgarh is a military school based  in Chittorgarh Rajasthan. It is one of several Sainik Schools. The school prepares students for entry into the National Defence Academy. The School is affiliated to CBSE  so the curriculum might differ from  Rajasthan state board.
The two nearest railway stations are Chittorgarh junction and Chanderiya.
Hope this answer helps.
All the best :)