This is another example from Japan http://www.youtube.com/watch?v=6dBwSSC8twg&feature=youtu.be
This is amazing the students clean their school .Wow teachers spend 40% of their time discussing and sharing their experience everyday. Whenever a student do something bad outside school the police calls his teacher, instead of calling his parents !!
Having two classes with 45 students each ,I thank God that nobody calls me about them after school time .