You can update the "Class Year" field individually by following the instruction below, or you can make those updates in bulk following the instructions linked here: Bulk Updates - SA

To update the "Class Year" field for your student-athletes, click into the "Details" of the Roster & Eligibility Status Widget.

Once inside the details for the academic year you want to update, scroll down to the Student-Athlete Information section and select the correct value from the "Class Year" drop down menu.