Exchange 2013 Hybrid Deployment, on-premise to multiple Office 365 tenants

Hello, we are in the early stages of planning an Exchange 2013 hybrid deployment for a federation of education organisations.

We are planning to use a single on-premise Exchange organisation for staff mailboxes across all member organisations, each member already has it's own Office 365 tenancy for students, which we would like to maintain if possible.

My question is, is it possible (and supported) for an Exchange hybrid deployment with a single on-premise organisation with multiple Office 365 tenants, my understanding is that only a 1:1 deployment is supported, can somebody confirm or clarify this ?

Thanks