Yes, your school probably has one of these (dirty and old)...
But keep your own personal one and let kids have the "privilege" of helping clean up! (Some actually enjoy this, trust me!)
I bought this brand myself, so the quality is good, had it for 1 year, and hasn't broken yet, haha!
My favorite part is the little teeth that help you get the hair off the bristles! (I have long hair that sheds!)
Perfect size for students and me (I'm 164cm), but might be a little too short if you're a big, tall, foreigner!!