Windows 10 Education Upgrade
Windows 10 Pro Education can be changed to Windows 10 Pro by entering the generic Pro license key in the settings > activation page.
Windows 10 S Mode Upgrade
To remove Windows 10 S Mode you can go through the App Store or re-image the device with Windows 10 Pro and the Pro generic key in an Autounattend XML File.
Get the current Windows 10 License Key
PowerShell:
powershell "(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey"
Can use CMD:
wmic path softwarelicensingservice get OA3xOriginalProductKey