I'm very interested in FP but I'm a sysadmin, not a dev, so I had to do a lot of reading. My conclusion is racket would be good for teaching indeed, but I think

I'm very interested in FP but I'm a sysadmin, not a dev, so I had to do a lot of reading. My conclusion is racket would be good for teaching indeed, but I think its ecosystem is a bit too academic though it is getting better. Instead, I think I would offer guile scheme as a language with some good, active projects to help on, such as the new cron replacement mcron. I would probably also offer elixir and some lisp variant. It was actually lisp that got me so interested in FP because I saw how much it was being used in AI research. That said, I think its worth noting Haskell is the only one I've seen listed here that is pure FP. So if one wanted to really use FP, it might be worth wading through the maze like Haskell ecosystem, but I don't think for teaching.