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, your profile is already in the Triton Student System. Choose 'Sign in with Extended Studies' and follow the prompts to set up your access.
- 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 enrollment.
- If you're enrolled through a program that provides a UC San Diego Active Directory (AD) account, your program sets up your account and you'll be prompted to claim it when you first sign in. If you're not able to sign in, contact your program office.
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:
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
Please contact ISS directly at ipadmission@ucsd.edu for assistance with:
- General enrollment questions
- Enrollment changes
- Payment receipts
- Address updates
- Program verification letters
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
