Hello candidate,

Most of the top tier colleges of the countries such as the Indian Institute of Technology, National Institute of Technology, and various other top government colleges and private institutions offer admission to candidates only up till one year of drop after their class 12th examinations. So, getting admissions into this colleges having three year of drop out is not possible but there might be several deemed universities and private institutions which might provide you admission on the basis of your class 12th results.

Good Luck!!