I would check this out extremely well . . I can't imagine a school sponsoring such a trip. Think of the liability on the school's end. . . Is this a trip planned by a group of students and parents? I can't speak to the ship or the cruise line policies, as I don't sail on Carnival ships - there are others on this forum who can do that. I would just be careful about committing to a trip like this without a thorough vetting of what iit is all about and finding out who is actually sponsoring it.