I say no. I like having my tamas near to me, but honestly, I get in trouble when 14 people in my class turn their sound on when my teacher is trying to teach. I get in trouble when I connect at lunch with my friends. I get in trouble when I connect at recess with my friends. And I get in trouble when I advise people to bring their tamas to school.
So...no. I don't think they should be allowed at school. My school is banning them next year, and I don't have a problem. I'll change the time to their bedtime when I have to leave. Big deal.
But of course, this is my opinion.