International students are not permitted to work more than a total of 20 hours from all jobs during ANY week (Sunday through Saturday) while school is in session. There are no exceptions to this rule. International students must be enrolled full time (12 hours for undergraduates / 9 hours for graduates) except for summer.
Curricular Practical Training (CPT) is an off-campus employment option for F-1 students when the practical training is an integral part of the established curriculum or academic program.
Optical Practical Training (OPT) is a one-year period for F-1 students to work in the US in a field related to their area of studies/major.