Optional Practical Training (OPT) is temporary employment authorization that allows F-1 international students to gain practical work experience in their field of study. 1. What Is OPT? The main goal is to give students a chance to get real work experience that is connected to what they are studying. This work experience is supposed to be related to the F-1 students major area of study. The idea is to help F-1 students learn things that they can actually use in their careers.