In the United States, Optional Practical Training (OPT) is a period during which undergraduate and graduate students with F-1 status who have completed or have been pursuing their degrees for one academic year are permitted by the United States Citizenship and Immigration Services (USCIS) to work for one year on a student visa towards getting practical training to complement their education. Foreign students currently enrolled at a U.S. university can receive full-time or part-time work authorization through Curricular Practical Training. In 2022, there were 171,635 OPT employment authorizations. In 2021, there were 115,651 new non-STEM OPT authorizations, a 105% increase from a decade ago.