If your kids’ school laptops are surveilled, they’re surveilled by someone. Let’s call that someone Joe. Joe is a person who took a low-paying job that lets him surveil your kids. Joe likes his job, because he gets to surveil your kids. He gets to turn on the camera and look in your kids’ room. He gets to read the chat messages your kids send to their classmates.
Your kids would be better off without Joe in their lives. Joe is not a source of security. Joe is not protecting your kids; Joe is a threat to them.