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.
Thank you for sharing that model; I'm familiar with both the junior college & upper division college (as separate institutions) and also familiar with 4-year colleges which require two years of liberal arts prior to declaring a major, which then opens access to courses in that major.
staceychev - the promised resource links will be forthcoming.