That interpretation of Sikhism may be valid, but I have Sikh friends who see it as a right/duty to be armed.
As for "selection by faith", that's not what we have. Given the profound difference between numbers in religious observance and attending school, one is left inescably with the impression that parents are choosin such schools for reason that have nothing to do with religion.
Actually it's such a huge skew in the numbers that the you could actually make a case that there are quite literally no actual Christians in this country at all.
The few % who regularly attend match is remarkably like the number who need to attend church for a few years to get their kids into the right schools.
Of course I'm not saying that there are no Christians, or even that a majority of parents take their kids to church for that reason.
But...
One does here a lot of casual conversations that imply that people do just that. Fraud in the selection process for schools is endemic, as we know. Bribes are offered, lies are told about where kids live, and faith falsely claimed.
The churches seem haphazard on this. At the christening of my last godson, the priest referred to me as a fine supporter of the church, which is odd, since I hadn't been in his church for 20 years, and it was taking an act of will not to hospitalise him.
If the only way to get a good education and avoid a sink school was to squander Sunday mornings for a while wouldn't we all lie about this ?
One cannot help but wonder if part of the Church motivation is to keep bums on seats.