Schools are used to increase the education of citizens. Educated citizens will produce moreresource in any profession they may be assigned to.
A school house requires a teacher to be assigned as a worker before children can be educated. A school can only educate 20 students at once. You'll need more than one school house and teacher to educate larger populations.
When a child grows up and reaches an age where he or she could work, if there is space in a school that is staffed by a teacher, they'll become educated workers.
If a child doesn't have a school to attend, they'll become a uneducated worker, having missed their chance to be educated.
If a teacher is removed from a school while students are attending it, the students will try to find another school to attend. If there is no school for them, they will become general laborers that aren't educated.
Clicking on the school house will show how many students are being educated in the school.
Clicking on the button will toggle enabling or disabling education at the school. If work is not occurring, no students will be educated at the school house.