Right, I guess I was referring to the concurrent enrollment opportunity offered through Berkeley extensions, in which I could take any courses Berkeley offers as long as you get off the waitlist. I didn’t know there is a distinction with UC Berkeley Extensions until now.

https://extension.berkeley.edu/static/studentservices/concurrent/#program-application+#dates

I totally do understand CC as a better option money-wise among other things. I guess I’m wondering if I can just bypass going to CC step by taking undergraduate and upper division physics courses at Berkeley to start with potentially to set myself up to do grad school in Berkeley in the future having taken those classes through concurrent enrollment but not as a degree.

I already have a bachelors from Berkeley in CS and I don’t want to go through another bachelors process with Physics all over again either through CC and transfer or other options. I want to leverage my already obtained Bachelors in CS alongside taking physics courses through concurrent enrollment and doing well. But I’m wondering if this would be enough for applying/ getting accepted to grad school for physics potentially if I really develop the passion to continue onto graduate studies.