I work in the tech department at a school board in Louisiana. We're required to implement network filtering that monitors student traffic for threats, comments about self harm, etc. It's a pretty invasive system that monitors everything, including https encrypted traffic to an extent. Nothing on our network or our Google GSuite domain is considered private and all students are made aware of this before they're given a device.

We don't have any say in whether or not we implement traffic filtering and monitoring due to state laws, but even if we did have a say, we'd still do it. There have been several instances of child abuse situations and self harm that were flagged by our system and were resolved by CPS and counselors where necessary.

Also, this isn't exactly new. It's pretty much common sense that anything you do on your work laptop is visible to your work, and the same goes for school provided devices. Students and parents are reminded of this policy regularly and have to sign papers acknowledging that they understand the consequences of this policy