Course selection for Summer 2026 begins on Tuesday, March 3rd, 2026 and will open in windows based on certain criteria. Course Selection Windows [1] are posted on the Office of Registrarial Services' webpage. 

Once your window opens, you will be able to add courses until May 11th, 2026 for 6-week courses, or May 15, 2026 for 12-week courses. However, we encourage you to add when your window opens as some courses fill up quickly. 

If you have any questions about your program and/or the courses you should be taking, please email oac.pco@uoguelph to connect with your Academic Advisor. 

For help with Student Planning (the course selection and degree/diploma planning tool on WebAdvisor), click the question mark at the top right of the screen in Student Planning for answers to common questions, or visit the Student Planning website [2] for video tutorials, FAQs and support information.