Possibly we are operating under different definitions of "upper division college"... what is the meaning which you intend to convey when you use this term?
So that this diversion can be shut down, I will offer that upper division
coursework can often be taken by lower division
students in college, and that's how I interpreted HK's post. I personally was taking an upper-division history class during my first (full-time) semester in college, having satisfied the prerequisites via AP classes in high school.
I wish I could offer the OP some helpful advice, but I have none. I am fortunate enough to live is a very IQ-enriched area, so that my children have been getting adequate challenge at school without any acceleration.