I'm looking at applying to top 20 grad programs, but when looking at all of the applicant profiles, I noticed a weak spot in my application. My school doesn't have a graduate school in physics, and I was not allowed to register for any graduate math classes because I am an undergraduate. Will this hurt my chances? Should I mention in my application that my school doesn't offer any graduate level physics classes, or should I not even bring it up?
I am sorry if this is not on topic -- I am fairly new here.