Triton Student System

The portal for managing your UC San Diego Extended Studies account

Choose Your Student Portal

Select the student portal based on your course start date. If you select TSS, you will choose your login method on the next step

Summer 2026 and Earlier

MyExtension
Access all courses and account information for courses that started Summer 2026 and earlier.

Fall 2026 and Later

Triton Student System (TSS)
Access all courses and account information for courses that start Fall 2026 and later.

Signing In to TSS?

After selecting Sign In to TSS, choose the login method that matches your account.

Extended Studies — For most Extended Studies students and UC San Diego alumni. Choose this option if you do not have a UC San Diego Active Directory account.
UC San Diego SSO — Choose this option if your program provided you with a UC San Diego Active Directory account (such as Concurrent Enrollment, UPS, HDSI, SIO, or CLRE), or if you're a UC San Diego employee.

Important Sign-In Information

Google Chrome is the recommended browser for accessing TSS and booking courses.
Use a laptop or desktop computer. If you use a mobile device or tablet, you may experience issues.
TSS is unavailable nightly from 11pm to 7am PDT, including weekends, for system maintenance.

Account Access Information

Review the information below if you're a returning student, new student, or International Programs student.

If you’ve studied with Extended Studies within the past 10 years, simply sign in using your student credentials. Your profile is already in the Triton Student System.
If you last attended more than 10 years ago, you'll be asked to verify some basic information the first time you sign in.

If you are a new student, simply enroll and you will be prompted to create a TSS account during the enrollment process.

  If needed, you can create a Single Sign-On (SSO) account before accessing the Triton Student System.

Create SSO Account

Your enrollment and student profile are managed by the International Student Services (ISS) team.

Please contact ISS directly at ipadmission@ucsd.edu for assistance with:

General enrollment questions
Enrollment changes
Payment receipts
Address updates
Program verification letters

International Student Services (ISS)
UC San Diego Division of Extended Studies, International Programs
Suite 420, 4th Floor
8980 Villa La Jolla Drive
La Jolla, CA 92037
Email: ipadmission@ucsd.edu

What You Can Do in TSS

Find and book courses
Check your grades
View class locations, times, and dates
Generate receipts, enrollment verification, and grade reports
View your academic history (available in October)
Update your contact information
Order transcripts (available in October)