Opening new IITs, to my mind, will not affect the quality of students. We have enough good students to fill these seats. From the 1400 or so that were admitted in my time (1965), I do believe that the top 25,000 or more today have similar potential and this number will keep growing as more and more young people finish high school. Also, if you look at the profile of the students today in the IITs, they are not from Public Schools/Convents or the big metros. A large majority comes from smaller towns and this is a welcome trend.