Georgia College on Intellectual Property:
Generally, the university recognizes that a faculty member, staff member, or student owns his/her own work unless (1) the work was created pursuant to an external grant or contract, or specified in the terms of a gift, under which the copyrightable material was produced, or (2) if the work was created in the course of performing an explicit university assignment or commission to create such a work.
Also see the USG's statement on the Determination of Rights and Equities in Intellectual Properties (6.3.3.).