Login to the Sophos Console for that school:
CHS - CHMS-APPS
AVA - AVA-SCCM-01
Open Enterprise Console
Open the Server Group from the side blade:
Right Click -> Synchronization Properties
Close the box (Opening this box and closing it forces a sync)
Right Click the server to protect and click Protect Computer
Select Next
Untick Third-Party Security Software Detection
Next
Enter Domain Admin Login
Finish
Wait and Check status
Check tray on protected server for sophos