How to Book Classes (Undergraduates)

Last Updated: August 10, 2026 11:10:17 AM PDT

Undergraduates, learn how to book classes using the steps below.

Note: If you're a Summer Session student, see the Summer Session website for separate procedures.

Before you book, check

The Booking and Registration Calendar for deadlines
Holds that may prevent enrollment
Guidance on tasks within the Triton Student System (TSS)

1. Before classes begin

During your assigned booking window, book classes in TSS.

Don't know what classes to take? See What to Do Before Booking Classes for help.

2. Wait-list any full classes

If you can't get into a class you want, TSS lets you either enroll in another section of the same class or wait-list it.

See more information about wait lists.

3. View your class schedule

When you're logged into TSS, you'll see a list of each class you've booked, as well as any that you wait-listed.

4. After the start of classes, make changes to your schedule

Use TSS to make changes to your schedule.
See more details about:

Questions? Contact the Registrar's Office, registrar@ucsd.edu or 858-534-3150.