Sometimes, my school accidentally hits the button for no reason. It's really annoying, and a little over stimulating, as I'm an aspie.
My school's normal bell (the one that ends the class) is a loud BEEEEEEEEEEEEEEEEEEEEEEEEEP sound that hurts the ears and overstimulates the aspie, so it's a good reason why I come home agitated every day (I've heard that sound a gazillion times!) After elementary school, the annoying bell sounds started coming into my life. I bet that if that bell played long enough, it would seem to not be even there anymore - IT'S THAT SHARP!
They should get one of those old fashioned bells that make that very bearable: BRRRiiiiiing! sound. Seriously, I've heard enough BEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEPing all my life. They could at least get a better bell.