I would say it’s just about right.
The problem that I have seen is that some parents (and some rebbes) give the kids the idea that limudai chol is “shtus” and “bitul zman”.
This makes things very tough on the secular teachers, and down the road – on the (grown up) kids too, (when they can’t speak English properly, write a letter in even semi-decent English, and lack other basic, necessary secular knowledge).