When I tested it on subjects I knew, it gave better answers than teachers in my high school (Poland, but I guess it might be similar elsewhere in the West)

Also, a friend physicist tested ChatGPT on the basics of quantum physics and he was surprised at how much it knew.

IMHO the chat is at a level of 1st year university student - of any subject available. The only issue being that it always sounds super confident, even if it's wrong.