As an F1 student, you may choose two types of OPT: Pre-completion OPT and Post- completion（the most common). Pre-completion OPT: You may apply after completing one academic year of full-time coursework at a college before applying for pre-completion OPT. And you can apply up to 90 days before the end of the academic year, Post-completion OPT: You may apply after completing your degree. You can apply up to 90 days before you complete your degree.