I personally am not a fan of homework, so am happy when the teacher assigns none. (I also ignored the "please have your kid do 20 minutes of reading and 10 minutes of either math or spelling practice each night" request from last year's teacher. I figured as long as she could read, spell, and do the in-class math, we'd met the spirit of the requirement.)

That said, DD has free-choice reading and free-choice math as options (with TV / video games / free-choice computer time also on the list) virtually every evening, and often will choose to split her time and do both reading and math. So she gets as much challenge as she chooses at home.