This is not normal and should not be tolerated for any reason.
Never give someone remote access to your system at any time for any reason as doing so puts you and other users on your network at risk.
There is no room for debate, argument or justification and especially so when it involves children.
If a server admin or anyone asks for remote access to your machine you tell them to get lost. A server or admin team which pushes such a policy is not a server you should be playing on.