Are there schools who use Scheme as programming language?

I want to make some experiment on one of my classes by switching to Scheme. I already use Python for all other classes (children from 14 to 18 years old). I want to use HTDP (with Racket) and some SICP. The reason is that with Python it's tricky to use another libs, use GUI, 3D etc. With Racket it's look much simpler. Also Scheme itself is a lot easier language.