School bells have long been used in real schools to mark lesson times, and recordings of them have become a staple sound effect for creators online. Because the sound is universally recognised, it needs no explanation and instantly sets a school setting in short videos, presentations, and student projects. It is commonly searched for by students and editors who need a clean, realistic bell for a class assignment or a comedy sketch, rather than a musical sting or a cartoon effect. Its short length and clear ringing make it easy to drop into edits without trimming.