Does the school have a website? Many schools now have their handbooks online and policy on homework should be in handbook. At least that's how it works here. We had homework M - Th (lousy worksheets). We had a great K teacher who at least gave us more advance worksheets. She also gave more handwriting and writing assignment than his 1st grade teacher (who initially refused to differentiate homework).
I guess in the end it all comes down to the teacher just like pretty much everything else.