My school handled this cleverly by taking people with prior programming experience into a Haskell sequence, which suitably kicked our asses to the same degree as what the first-time programmers were getting.
My CS course at the University of Sussex, UK did this (in 1988) with ML, the functional programming language. Plenty of us had already been coding in C or Pascal before starting at college. None of us had done any functional programming. I loved ML: it seemed all elegant and beautiful and magical.
When I hear people starting their CS degree with C++ or Java, it makes me cringe.
My college's CS program did the same, but with Scheme back in the day.
I can't complain, since I was introduced to Emacs along the way, which I still use heavily to this day. And while I don't really use Scheme anymore, it made Elisp trivial to figure out.
