Many schools ring a bell to tell children when it is time for class.
When you hear the bell, it is time to line up or go inside. It is like an alarm clock for the whole school.
More facts about At School
The word "school" comes from an old Greek word that meant "free time."
A blackboard is dark so that white chalk shows up brightly on it.
A classroom is a room where children learn together with a teacher.
Recess is a break when children can run, play, and rest.
The oldest school still teaching today is in Morocco and is over 1,000 years old.