Agnostics and atheists know more about religion than believers at least in America. This isn’t shocking mainly simply because most agnostics and atheists I know left religion because they knew what the religion was teaching whereas religious people stop learning after their parents stop teaching them. This is not always true but neither are statistics.
My favourite comment so far is from Charles Lewis:
The Roman Catholic Church’s most fundamental teaching is that the bread and wine used during communion are transformed into the body and blood of Jesus. This belief is what separates Catholics from Protestants and is a core sacrament of the Catholic Church. Yet, 45% of Catholics believe the bread and wine are mere symbols. That lack of knowledge is akin to owning a car and not knowing what the steering wheel is for. Father Len Altilia, a Jesuit priest in Toronto, said the real presence of Jesus is the “source and summit” of Church teaching and what brings Catholics close to God. But Father Tom Rosica, also of Toronto, was not surprised: “It is an indication of terrible education and confusion among our people.”
Not knowing what the steering wheel does might result in some people dying while not knowing that the Catholic Church teaches transubstantiation will just cause to piss your pants laughing.