All students staying in India , longer than 6 months are required to register with FRRO.
The following documents are required at the time of registration with the Foreigners Registration Officer. 

(i)   Photocopy of the passport and initial visa.

(ii)  Four photographs of the applicant.

(iii) Details of residence in India .

(iv) HIV test report from one of the WHO recognized institutions for people in the age group of 15 to 60 years, if the foreigner is visiting India on a visa for more than one year. 

(v)  Bona-fide certificate from the University/College/Institution in case of student visa.

(vi) Proof of a bank account/ sufficient funds, for non-scholarship students

Various foreign registration offices in India are:- 

The Foreigners Regional Registration Offices (FRRO's) are located at CHENNAI

Foreigners Regional Registration Office

Haddows Road , Chennai

Ph.: 91-44-28278210

Fax: 91-44-28240338

Certificates of registration will be issued by the registration officers.

Foreigners should surrender their certificates of registration to the officer of the place where they are registered or of the place where they intend to depart or to the immigration officer at the port/check post of exit from India . If the certificate is surrendered to anyone other than the immigration officer at the port/check post of exit, the foreigners should produce the receipt indicating such surrender of the document to the immigration officer at the port/check post of exit.

Registration is required to be done only once within the stipulated period, even though you may go out of India on multiple entry facility during the validity of the visa. Only if you enter India on a new visa will you be required to register again. 

Foreigners can visit restricted /protected areas only after getting a valid permit as visa alone is not enough to visit such places.