Most of the colleges in India offer admission through Jee Main or any other engineering entrance exams. Only a few colleges are there those offer admission to engineering programmes on the basis of 10+2 marks. Colleges like PSG College of Technology, Thiagarajar College of Engineering, Madurai, Kongu Engineering College, Erode, Velammal Engineering College, Chennai etc offer admission through TNEA counselling. Counselling will be based on marks obtained in 10+2. Sastra University offers admission through Jee Main. It also offers admission through 12th marks or Stream 2 process of admission. In Kolkata, Techno India University, University of Engineering and Management offer admission on the basis of 12th marks. Or else, you can get through Management quota for which the fees will be quite high. http://engineering.careers360.com/articles/btech-admissions-on-basis-of-class-12th