I grew up in a 'somewhat United' household; United, peppered with Catholic. My mother was raised Catholic and my Dad was raised United. It was a HUGE scandal when they got married. 'Religious segregation'- the European settlers remembered to pack that foolishness in their bags when they showed up way back when. And it was still evident in the late 50s when my parents got married.
Our schools were religiously segregated until 1997. I went to a large and modern school in western Labrador that was built in the 60s. It was split down the middle with one side for the Catholics and the other side for the Protestants; there were large steel doors that separated the two sides.