National Defence Adademy NA Examination-Written Preparations The written batches are for a duration of approx 45 days to 2 months.The classes are daily except on Sundays. Batch timings are 0800h to 1400h and 1400h to 2000h. The Fees as on date are Rs 20,000/- if you have Physics and Maths at 10+2 level. My advice is that you should also join for the SSB training during the same time so as to take maximum benefit since you will have to come to Pune anyway so during the remaining time you should attend SSB classes. The written exam can be cleared with hard work and by putting in more hours of studies but it takes time to develop one's personality which is what we are looking for at the SSBs. In any case what you will learn for the SSB will help you for the rest of your life. I am also doing similar work in the Corporate / Industry and have helped a very large number of Managers and Executives to become better in their respective careers.Thousands of students have benefitted immensly by the guidance that they have recieved here at the academy.