It is child abuse to brainwash children who should be allowed to form their own opinions when mature enough to do so. If one is not allowed to vote until aged 18, why should children be endoctrinated in other ways. The world has enough problems to deal with concerning the clash of fundamentalist religions without our education system perpetuating the primitve dividing lines.
Faith schools should be outlawed. Faith groups should be barred from the "free schools" movement. (Which is a terrible idea anyway, and designed to fragment our universal system of education and benefit the few at the expense of the many.) Religious observance and acts of worship are inappropriate in schools. It is sufficient to teach children about religion and belief systems as an academic subject.