Always keep your windows locked
This helpful fella used to rob schools as a teen. We can’t imagine what kind of things you could steam from schools. All they have are LCD projectors, computers, and probably fellow students’ belongings in their lockers. Even though schools typically have some sort of security system in place, many of them disregard the significance of windows.
If a window is unlocked, anyone can slide it up from outside. This will give them easy access to a classroom and possibly allow them to roam the halls. The same applies to our homes. Lock your windows at night and whenever you’re going out.