Mercy Rule?

http://www.ajc.com/sports/content/sports/highschool/stories/2009/01/22/high_school_100_point_win.html?cxntlid=thbz_hm&imw=Y

A Texas woman's bball team won 100-0 recently and now they feel bad about it. How in the world do you not score one point? I think they should be proud. I thought it was a football score at first.