Under ‌the proposal, nonimmigrant students with F-1 visas would be required to pay $70,000 to a certified institution for on-the-job training, known as ‌Optional Practical Training (OPT), and $30,000 for any additional work training Under ‌the proposal, nonimmigrant students with F-1 visas would be required to pay $70,000 to a certified institution for on-the-job training, known as ‌Optional Practical Training (OPT), and $30,000 for any additional work training