Why got pre-physical sciences major but I want to study CS

I applied CS but my package says pre-physical sciences major? Should it be pre-engineering in order to register CS classes?

UW has a CS major and a CE major. I believe they’re both identical, only with different pre-requisites, and offered by different colleges (arts/sciences vs. engineering). So no, if you listed your intended major as CS, then pre-physical sciences is right. That being said, you could probably apply to CE if you wanted.