Believe it or not, carpets don't need to be cleaned that often. It's better to vacuum them regularly using a filter to suck up dirt. Ask if your school can give them a try too. Printers and copy machines can give off small amounts of chemicals. You can also suggest that your school put more plants in classrooms and around the building.
Plants make the air cleaner and produce oxygen, which people and animals breathe.
Out with White-Out Many school supplies are not healthy for you or the environment.