My school was pretty religious merely due to its location and history despite it being mainly boarding school and most of the pupils not being Christian. Had 35 minutes of listening to a priest ramble on and singing hymns 5 days a week. Despite this the pupils probably had the lowest standard of morals I have still ever come across. The highlight was 2 girls getting caught giving blowjobs in the cathedral crypt, after that the school rules were changed so that any sexual act or drug offences would result in you getting asked to leave immediately rather than the old 3 strike policy.
That year about 12 people were “asked to leave.”
They never did expulsions as that would make it known to the public or something whereas being asked to leave kept it secretive and within the school