No... this type of thing should be setup where your child's daily schedule is in the computer and you login to the server then you can only view the classroom your child is in based on their schedule. Zero doubt in my mind this could be setup to restrict viewing for privacy. Sure it can be hacked but I don't know many people who would commit a felony just to look at the back of a bunch of kids head and a teacher standing in front of a class... that's one freaking smoking hot teacher. Its not like there would be a camera in the locker room or restrooms.

In fact cameras like this would be very useful during things like fires and active shooters.