Oh I know I know, I don't want them bored or coasting smile I just get the heebie jeebies from the word "challenged", just like some people don't like the word "gifted".
I think "challenged" to a layperson doesn't mean what it's meant to mean! We've had too many years of teachers giving MOTS in response to the request for a challenge: same old stuff, higher level.
Maybe "engaged" is more the word I'd use.
(Yes if you can tell, I'm a bit bored by school and considering homeschooling. Definitely coloring my view!)