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Declaring Computer Science for AB '25 Students


Dear Prospective AB'25 COS Concentrators,

Below please find all the information you will need to declare your  AB COS concentration and select your fall 2023 classes. We encourage you to review all the information below, and if you have any questions, contact the COS Undergraduate Program Team members listed below.   

What are the prerequisites for AB concentrators?   

All students concentrating in computer science must take three prerequisite computer science courses: COS 126, COS 217, and COS 226. AB candidates must also take any one of MAT 202 or 204 or 217 or EGR 154. 

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

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

A great online source is the Undergraduate Program FAQ.

Ready to declare Computer Science (or would like help deciding)?

Step 1.  Attend the AB'25 Open House
Step 2.  Ready to Declare
Sophomore concentration declaration will be March 30 – April 17, 2023.  Go to TigerHub to declare COS. Intended concentrations are processed overnight. The department will have access to your academic records one business day after you complete this form.
*************** You must declare your COS concentration before you can move on to Step 3. *********************
Step 3.  Now that you have declared your concentration as COS, welcome to Computer Science!    
April  2023  - Complete your Departmental Academic Planning Form (DAPF) in Tigerhub. If you require additional advice on courses or independent work, please email the advisers below, which are assigned by last name:
  • AB'25 Surname A-J   
  • AB'25 Surname K-R   
  • AB'25 Surname S-Z   
Step 4.  Fall Course Selection
After declaring COS and entering your fall courses into the DAPF, you are ready to select courses for the fall semester. Sophomores will be able to enroll in courses in Tigerhub beginning April 19, 2023.   
Back to Majoring in Computer Science to see requirements for concentrators.
Additional Information:
  ODOC page on declaring a major
  Registrar’s page on Concentration Requirements
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