The most common ways by which it is implemented are:
1) The fresher SC/ST students are ragged....badly. They are insulted on caste lines, made to say derogatory words about themselves, locked up in their hostels and dorms, and to top that all, worse forms of physical abuse.
and those who 'deny' it, please get a life. you may be 'smart' but that doesn't make others fool.
how come you have never been there or talked to such fellows, and still you have the cheek to deny it, just because you are from 'general category', the only category that has reserved the rights for itself to be meritorious.
2) Now the responsibility of persecuting SC/ST students is shared by the faculty as well. After all, why should the 'non-meritorious' make it to 'their' college by 'victimizing' the meritorious class. So the faculty takes it upon their shoulders to prove SC/STs as non meritorious, by failing them or undermarking them in exams, in laboratories and by humiliating in classrooms.
3) Students councils, students bodies...some places where SC/ST students never get selected to.
If at all they do, because it was mandatory according to the institute regulations, they are victimised to the extent that they'd quit it. you can read instances regarding the same in the link above.
4) SC/STs must not try and interact with the meritorious category. SC/STs are warned in advance, not to use 'their' playgrounds, not to play 'their' sports, not to do ANYTHING they are told not to.
million other ways are devised and implemented everyday by the 'meritorious' general category...if you've been into any university in India, you know what i mean.
and to cut the rest of the saga short.
All SC/ST students who are harrassed in their educational institutes, please do report the same to us at firstname.lastname@example.org
We have provisions in law against such casteist practices, lets not let them go free because we do not report their crimes, for the fear of further oppression by them, their mates and faculty.
Do report it to us and join us for action against the culprits. Do not fear of any further oppression that they might unleash upon you. Report it to us.