classroom cleanliness

To keep our classroom clean we can sweep the class before going home and do not litter in the class.lets take a look at the classroom above it is so clean if u want a clean class please do not litter and clean it every time. we also keep our class clean by empty the dusbin everyday .we can learn that if we do not keep our classroom clean in our class there will be many student and teachers will be sick. And we cannot learn well and in test we will not do well??????