Exactly. School is a much better environment for repetition anyway - you can oversee students doing the chores and explain things to them individually if they get stuck. It also seems better to use the "high-grade" time (home) for learning new things and "low-grade" time (school) for repetitive chores.

If you have to assign something to them to do at home, stick to just making them read a book instead. Right now they have to do both, and there isn't enough time for that.