The cup??

Sam • Lean in child, I'm listening💕🌠

I'm 14 years old and I want to learn how to use the cup. Is it hard?? How long can you keep it in for?? Can you pee with it in?? Also how often do you jave to replace it?? Can I clean it at school?? Please as much info as you have because I'm blissfully ignorant but these might help with male teachers that won't let me go change my pad. I once had to yell at a male teacher to let me go. And then all the girls in my class began throwing pads and tampons at him but I would love to not have to go to the restroom at school