You asked a question what happens to SC/STs once the pass out of IIT. I am right here, working in Detroit,MI and leading a development group. Donot tell us that we cant cope up with your syllabus. Ask yourself what you were trying to do with our grades, even though we were performing well. Actully there should be a system to check how profs are doing. I am sure most of the profs will soon be thrown out. In my department atleast 50% were totally useless and they were not SC/STs.
Well, I cannot reply to your complete article, as I am not a retired person yet, but if you wanna meet and discuss, I will be happy to do so. I have reply for eaach an every doubt and question you have raised.