When users click Start > Shutdown the default option in the drop-down menu is 'Restart' so suite is turned off and proceeds to turn itself back on!
Have applied the policy: User Configuration > Policies > Administrative Templates > Start Menu and Taskbar > Change Start Menu Power Button but it has zero affect.
Staff and students, staff are on roaming and kids are mandatory.
Admin account is fine.
Going mad trying to find the solution! Little help? :)