Documentation of your previous degree - high school diploma for undergraduate students or college degree for graduate students - is a condition of your admission to, and graduation from, NYU.
If you are a current NYU student and did not provide documentation of your previous degree during the admissions process, you will be required to submit it as soon as possible upon matriculation at NYU.
Typically, the credential(s) proving prior degree are sent to NYU before the start of your first term at NYU; if you did not provide the document(s) to NYU at that time, you may be prevented from registering for subsequent semesters until the documentation is received.
Where you went to high school and the type of high school you attended determines what document(s) are needed by NYU.
Refer to this site to determine which document(s) are required depending on the type of high school you attended.
Generally, you will need:
Documentation of college graduation at or beyond the bachelor's level is required for graduate students.
A final, official transcript that notes the degree awarded and graduation date is required of all graduate and professional students. If your transcript does not contain that information, you will be asked for the diploma/graduation certificate as a supplement.