u/Fit-Ear6996

So I'm picking classes for the 26/27 term, and I'm wondering which version/year of the University Catalogue to use? My first year was the 25/26 term. I feel like I remember someone saying that you should always go back to the University Catalogue of the year that you started in when picking classes for your major. Is that correct, or should I just go to the most recent University Catalogue? Thanks!