My head teacher and SLT have just set up a WhatsApp group to communicate to us all as a team. WhatsApp is for my friends.
Office 365 is for work.
In my mind this crosses boundaries that I’m not happy with as we weren’t asked about this first.
Am I being out of order?

I don’t want to be difficult. I want to keep professional. I want to keep communication clear and how it should be: through the correct channels.