

Might want to reread some info on the grades maybe.
When I was in college, a C- still meant you passed the class, but you didn’t pass well enough for it to count as a prerequisite toward another class.
So if you finish, I dunno, CHEM 1210 with a C- you’ll still get the credits, but if you needed that for CHEM 2210, you will need to retake 1210 to get at least a C to qualify those credits as their prereqs for 2210.
Hopefully that makes sense.
Happily! I’m glad you’ve been enlightened!