What does auditing for a class mean?!?😭 is he taking the class or what?

It's means you're just sitting in on the class not signed up for it. So you don't have to do assignments, but it also doesn't give you any credit.

What maimai said - it's basically a try before you buy option for a class!

Thank youu!! I never heard of this and I don’t think my uni before have this

Thank you! I wish my uni have this during my studies