jquick:
It really depends upon the coach. My DD's varsity team is in practice or games every day until 5 or 6 PM. The kids then have to do homework.
My DD is in practice until 530 Monday-Saturday and has plenty of homework but without a doubt my DD's high school and other local ones aren't working very hard every day. Most days my DD gets home for dinner around 9pm, showers and does homework until midnight and then gets up and does it again the next day without much complaint.