There were some similar questions on r/functionalprogramming subreddit. Maybe there's something useful there? Search for "teach" or "class" I think, e.g.

- "How would you teach a group of 9th graders functional programming?" https://old.reddit.com/r/functionalprogramming/comments/avcr...

- "I want to teach programming via functional paradigm to someone with no background" https://old.reddit.com/r/functionalprogramming/comments/egzz...