[rglullis]

> if I somehow managed to get them to ditch Whatsapp, I would be held responsible for it.

No, think of it as a grassroots movement. You won't be doing anything by yourself, you'll be gathering just enough support to make it become a collective action.

It doesn't even to be a majority. Just a small group of parents saying "anything but WhatsApp" will at least get people to look for an alternative. If their excuse is "the current system from government is bad", the group can respond with "here is a list of messaging providers that use open messaging protocols."

It does NOT have to be a crappy app (e.g, Conversations XMPP is actually quite a polished client) and it does NOT have to cost a lot (I know that I can provide a fully managed service to schools for $0.10/user/month and still be profitable). All it takes is a small committed group refusing to take no for an answer.