Declaring Computer Science for BSE'26 Students | Computer Science Department at Princeton University

Dear Prospective BSE'26 COS Concentrators

Below please find all the information you will need to declare your BSE COS concentration and select your fall 2023 courses. We encourage you to review all the information below and if you have any questions contact the COS Undergraduate Program Team members listed below. Please join us for the BSE'26 Open House!

BSE'26 SPRING 2023 Open House, To Be Announced

What are the prerequisites for the BSE'26 COS concentrators?

All students concentrating in computer science must take three prerequisite computer science courses: COS 126, COS 217, and COS 226. The math requirement is automatically fulfilled by BSE candidates through their general BSE degree requirements. All prerequisite courses must be taken for a letter grade, not PDF. The three prerequisite computer science courses introduce the core concepts and techniques of the field. All three are offered every semester.

How do I know if Computer Science is a good fit?

Welcome to the Computer Science Undergraduate Program.
Review the Class of 2026 - Departmental Requirements
Browse the Computer Science website, especially the Undergraduate pages.
Why COS? Advice from the Computer Science Undergraduate Student Council.
Ask the Undergraduate Program Manager, Colleen Kenny. You are welcome to send an email ckenny (@princeton.edu)

Where can I find answers to my Computer Science questions online?

A great online source is the Undergraduate Program FAQ.

BSE'26 Pre-Concentration Advising Steps:

Step 1. Attend the BSE SEAS Open House - To Be Announced

Step 2. March 2023 - Review the Fall 2023 COS course offerings posted on the Registrar's website.

Step 3. April 2023 is your academic advising period. Once you have completed your Pre-Concentration Advising Form and you are declaring COS as your concentration, your departmental adviser will review your form. If you plan to declare Computer Science as your concentration, contact your academic adviser by surname in the list below:

BSE’26 Surname A-D
BSE’26 Surname E-I
BSE’26 Surname J-M
BSE’26 Surname N-S
BSE'26 Surname T-Z

Step 4. April 20, 2023 It is now time to select courses for the fall semester.

Step 5. May 2023 Declaring your Concentration

BSE first-year students indicate their concentration on Tigerhub.

Welcome to Computer Science!

Back to Majoring in Computer Science to see requirements for concentrators.