An Indian citizen who is ordinarily residing outside India and holds an Indian Passport and must have had at least 3 (three) years of education in a Foreign country during the last 6 (six) years and must pass the qualifying examination (inclusive of 11th and 12th standard or equivalent) from abroad only.
The citizens of another country (except Pakistan and Bangladesh) but was a citizen of India at the time of, or at any time after, the commencement of the constitution; or was eligible to become a citizen of India at the time of the commencement of the constitution; or belong to a territory that became part of India after the 15th day of August, 1974; or who is a child or a grand-child or a great grandchild of such a citizen; or
A person, who is minor child of a person mentioned in clause (a); or
A person, who is a minor child, and whose both parents are citizens of India or one of the parents is a citizen of India; or
Spouse of foreign origin, of a citizen of India or spouse of foreign origin, of an Overseas Citizen of India Cardholder registered under section 7A, Citizenship Act 1955.
And as per Gazette Notification No. 26011/01/2014-IC.I dated 09.01/2015 the Persons of Indian Origin (PIO) cardholders shall now be OCI cardholders. The student admitted under this category can do all activities except research work for which special permission is required from the Indian Mission/Post/FRRO concerned.
Citizens of all countries other than India, who are not of Indian Origin as defined under OCI.