When the students come into the museum foyer we ask them to check in their backpacks with their books, lunch boxes, etc, at the cloakroom before they enter the museum proper. I'm afraid in the past we have had a few things gone missing after school visits so this is a strict rule. Also, some of the exhibits are fragile and we don't want them to be accidentally knocked. But we do provide school students with handouts with questions and quizzes on them. There's so much that students can learn in the museum and it's fun for them to have something to do. Of course they'll need to bring something to write with for these. We do allow students to take photographs. For students who are doing projects it's useful to make some kind of visual record of what they see that they can add to their reports. And finally, they should not bring anything to eat into the museum, or drinks of any kind.