That sounds like an awful lot of homework, if it's just reading and math drills. If it were my DS with all that, I would just have him skip the drill stuff and work on the writing that needed to be done.

If I have a kid who's perfect at school and a nightmare at home, that would have to be DD5. She doesn't seem to pull any of the "I can't" or meltdown stuff at school, just at home where it's comfortable.