If you are an international student looking at the OPT, there are some important details about pre-completion OPT and Post-completion OPT to note.
Pre-Completion OPT: Any portion of OPT used before the student's program end date. It may be part-time or full-time.
Post-Completion OPT: Any portion of OPT used after the student's program end date. It must be full-time.
![](https://i.ytimg.com/vi/vtTNg4BnKpg/maxresdefault.jpg)