What is considered part-time?
Employment for 20 hours or less per week while you are enrolled for classes is considered part-time curricular practical training. The employment authorization page of your CPT I-20 will specify permission to engage in part-time training and you must limit your work to no more than 20 hours per week. There is no limitation upon the length of time you may participate in part-time curricular practical training cumulatively, but you must be simultaneously enrolled as a full-time student in order to maintain lawful F-1 status.