U.S citizen married to F1 student - does he meet requirements to be considered a resident alien to file a joint tax return?

It depends.  While he technically may not on his own qualify to file as a resident, if you are an American citizen, then you may prepare a statement that says you elect for him to be treated as a resident for tax purposes, which would then make all of his worldwide income taxable.  You would then be able to file a joint resident return.  Here is an IRS website with more information on this provision:  Nonresident Alien Spouse | Internal Revenue Service.  Click on link and scroll to following heading: