Optional Practical Training (OPT) and Curricular Practical Training (CPT) are programs that enable international students to gain hands-on work experience while studying in the US. OPT relates to one’s program of study and can take place during enrollment (pre-completion) or after graduation (post-completion). CPT is an alternative to internships, work-study, or similar programs, offered by a sponsoring employer that has a partnership with one’s university. Each has specific visa criteria and predetermined time duration, among other requirements. Get all the details on the Shorelight guide to OPT and CPT.