I once took my GBA SP to the school and did some matches of DBZ Supersonic Warriors and my teacher found out and he took it out, mom got to go for it to claim it and she didn’t allow me to play with it for like a month lol
So no, I do not have good experiences taking my handhelds to the school, I have taken several times later my handhelds to the school but I generally don’t like to be asked what I’m playing, or worse people touching my stuff haha.
The best memories I could think of were playing GTA Liberty City Stories and Burnout Legends of PSP with some mates, but those were just some few occasions.
Also I managed to do some matches of Metroid Prime Hunters, but I was the one to bring all the hardware needed 😂