Forget the Wi-Fi when a student closes the Laptop

Hello,

I work at a high school and the students here have shared devices. We have set up in intune the policy that forces them to enter in their Wi-Fi to log in to the computer. After the students are done with the computer they close the lid and return it to the cart. The next student comes and takes the device and uses the prior students' Wi-Fi because they did not properly sign out. I have it set to not cache the credentials but that does not work in this case. 

Does anyone have a workaround for this? I asked Microsoft and they could not help so I am asking here. Any advice would be greatly appreciated.

Thank you!