I was about to make the same comment. Squeak and Scheme were mind expanding points of curriculum for me.

I still remember writing a Ga Tech themed version of The Sims in Squeak. I felt omnipotent being able to inspect or modify any object while debugging the game mechanics engine I’d written; that was a fun project.

That was going to be my guess, too. Looking through some syllabi over the years it looks like they used Scala for it for a while and Python, more recently.