7 votesChristoph commented
That's an interesting idea.
Afaik ConfigMgr uses WOL (Wake on LAN) to achieve the wakeup - which is possible because desktops and their NICs are still connected to power. But with laptops you'll usually end up either in Standby, Hibernation or Shutdown states. As far as I remember only standby is able to supply (a tiny bit of) power to hardware functions (including your WiFi functionality) - not including Modern/Connected Standby options (which the hardware also must support).
Looking at https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/wi-fi-power-management-for-modern-standby-platforms and https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/modern-standby-wake-sources I think there is an option to send a WOL package to devices in "Connected sleep" mode, but you'd also have to enforce this mode for your laptops and prevent students from completely shutting down the system.
Thanks for the feedback. Updating status to Noted – https://blogs.technet.microsoft.com/configmgreng/2016/03/11/configmrguv/ – and moving to OS Deployment