I'm an IIT aspirant....now I'm in grade 12 and I'm from tamilnadu we have our board xms too ...the syllabus of our state board is totally different from JEE syllabus how can I manage my time for both the exams I want to get into nit Trichy...how much I should score in my JEE mains to get thr?

Start preparing for JEE from now as students studying from different board face problems as they are not able to cope up with the JEE syllabus especially after the final board exam. Buy NCERT books and Coaching material to correlate what you are studying in school and the extra portions of JEE. Go through previous year questions papers to see if you have covered those topics in your 11 and now in 12^th.If not then join coaching classes. We at askiitians have best faculties from IITs itself to train you well so thatyou can manage both schhol and JEE course. You need proper guidance before time slips away.