As a teacher mentor and supervisor, I often would engage teachers in case studies of common parent-teacher conflicts. We would read from the scripts while role playing.
A clean environment is a blessing. A dirty, trash-filled, or otherwise untidy environment is more than just an eyesore. It can cause people who have to function in such an environment to experience mental illnesses, such as depression. It can decrease our productivity and creativity.
In Japanese schools, students clean the entire school in the last 15 minutes of the school day. They grab the brooms and mops and scrub down the hallways, classrooms, and bathrooms.
In most Muslim households, and throughout the Muslim-majority world, people usually observe the tradition of removing their shoes at the entryway. Our religion values purity and cleanliness, and keeping dirty footwear off carpets and floors is one significant way to reduce germs and grime.
Good hygiene is extremely important in Islam. It is a prerequisite for performing many acts of worship, and maintaining it can be an act of worship in and of itself. The companion Abu Malik at-Ash'ari reported that the Messenger of Allah, peace and blessings be upon him, said: