Hey Cellu,

Your Son has Scored really Good. Talking About computer science in nits it totally depends on upon no. Of seats available and due to quota how much are available in open. But as your son has scored well and landed Up At 12k I assume he has Pretty Good Chances Of getting CS seats in Reputed NITs. As well as IIITs too. Here is a link you could try to predict your son's college.

https://engineering.careers360.com/jee-main-college-predictor?ici=search_trending

Best Of Luck