GRE - Cutoff, Reservation, Quota, DOCUMENTS, Categories?

Requirements of a Valid ID Proof Document:
Only original documents are accepted. Photocopies are invalid.
Documents which are outdated and have completed the validity date are not accepted.
The document should bear the candidate’s full name as it is in the admission ticket.
The document should have test taker’s signature and photograph.
Documents Considered Primarily as ID Proof:
Passport
Driver’s License
Military Card
State or Province ID card
National ID card
There are few documents which can be produced as supplement for primary ID proof documents, under the following circumstances:
If the test administrator questions about the primary ID document which is submitted.
If the document submitted for ID proof is acceptable but still does not have candidate’s full name, photograph and signature on it.
Documents Accepted as Supplement of Primary ID:
ID card issued by Government
Student ID card
Confirmation letter of identity issued by candidate’s educational institution

Yes ofcourse it has. The plight of SC's and ST's are internationally known. What's more, Stanford and Harvard even have 50% of their seats reserved for them. Even the top mnc's choose SC's and ST's in the silicon valley, over other students.