Lavatory cleaning at school!
Did you clean the restrooms when your were in elementary school?

So, in your country, do the students clean the class rooms or is it the janitor's job?
In Japan, elementary/junior high school students have cleaning duties at their school.
Of course starting from grade 1.
Not only do they sweep but they usually use a wet cloth(Zoukin 雑巾) to wipe the floors as well.  When entering  schools in Japan, you will notice the children changing shoes to indoor shoes(uwabaki　上履き).  Although they wear room shoes, the dust and eraser debris piles up.  Time for cleaning is in the schedule every day.

Today, I found an article in The Japan Times, that lavatory cleaning will be one of the tasks from next April(School year begins from April) for students in all the Yokohama city's 500 public elementary, junior high and high schools.  This is a change since 1985.  Before 1985, students used to clean toilets.  After janitors took over the job of cleaning since 1985, the lavatories increasingly accumulated garbage and graffiti.
As a solution, came this change.  A school survey  showed 88 percent of the children from the third through sicth grades responded that they have been making a more conscious effort to keep lavatories clean.  

Yokohama may seem unique in its taking of lavatory cleanup chores to children, in reality most public schools nationwide(Japan)  consider this task a responsibility of students.  The  School Toilet Study  Group, established by six toilet-affiliated companies, reported that 62 percent of all elementary scholls and 78  percent of juniour high schools have their students clean the lavatories, according to a survey carried out in August, 2009.   And A Yahoo Japan survey last year found 92 percent of the public supports this activity, both at the elementary and junior high school level.

As for the indoor shoes, my kids bring back their indoor shoes every Friday to wash.