Respected Sir/Mam,

Sir my son has passed 10th in 2012 and 12th (with 84%) in 2014 with ISC and
give the Jee (Main) exam. and did not qualify because of high boards percentile system.
Can he go for 12th again with NiOS board in 2015 for better percentile and reappear in JEE (main) again.
Will this allowed or not for JEE (main) ranking and NITs counselling....