That will never happen in the United States, the janitors' union will not permit it.
However, it is distinctly possible that the janitors will sit around doing nothing all day and collecting a fat paycheck (half of which will be donated to the Democrats) while the child volunteers actually clean the school.
semi-related--I work as a civil servant (Navy)--the janitorial contract for the new FY states that our janitors have to emply the trash "only" once a week---we have to take it out the other 4 times. LOL...and in the meantime, the janitors stand around smoking their cigs and talking on the cell phone.