There are only 1,631,000 Christians in Canada ( Traditionally referred to as The One True Faith.) If you add in the members of the United Church of Canada which is unofficially related to the Christian Church, it still only adds up to about two million, out of a population of 38 million. On the other hand, while Christians may be a minority, the Head of the Christian Church is also the Head of State. We do not have an American style separation of Church and State since they are one and the same. Most Canadians who follow a religious faith are Disenters, Roman Catholics Jews Muslims, Hindu's, Sikhs and Eastern Orthodox. Many others have no affiliation to an organized religious faith.
Is it reasonable to give preference to 5% of the population in the school curriculum? Is it feasible to cover all faiths that exist in Canada and do each justice? That is why we have places of worship, to instruct the faithful. School is not the place. That is the place to teach math, chemistry and physics.