Head TAs: Spencer Doyle & Jordan Manela
You have arrived at the website for Princeton University’s Department of Computer Science’s Intro COS Lab hosted in the Computer Science Building. Come to get debugging help with programming assignments in any of the courses of the introductory COS curriculum (COS 109, 126, 217, and 226).
Useful Links
- Read once before going to queue
- Access the Intro Lab Queue Form
- View the Lab Queue
- Give your Intro Lab TA some feedback
- Information about becoming an Intro Lab TA (and get paid!)
Announcements
- The lab will open starting on Friday, September 5 for the Fall 2025 semester
- For this semester, both the COS 126 and the COS 226/217 labs will take place in the Computer Science Building, Room 105.
Fall 2025 Schedule
| Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday | |
|---|---|---|---|---|---|---|---|
| 126 and 226/217 lab TAs available | 7-11pm | 7-11pm | 7-11pm | 7-11pm | 7-11pm | 3-7pm | 5-11pm |
Lab TAs will be available in-person ONLY in the Computer Science Building. Once you arrive there, to request help from the Lab TAs, go to labqueue. Please note that Lab TAs focus ONLY on debugging questions with existing code, all other questions should be redirected to Ed or office hours.
– Last updated September 4, 2025.