There is an overarching WiFi network named "MHUSD" that is accessible on all MHUSD sites. Your district issued device will connect automatically to it but you may want to connect your personal device(s) to it as well. The process is a little different for each device but these guidelines should get you connected.
Unlike a normal WiFi network, MHUSD WiFi will request a username and password when you try to connect to it. Below are the username formats you should enter based on your device. The password will be the same one you use for your other district accounts (email, Aeries, etc) .