Guy wrote:It is my opinion that school is primarily designed to gradually indoctrinate children, whose minds absorb whatever information goes in without question, into a certain way of thinking and behaving.
...But that might just be my opinion.
Not just your opinion, but you are emphasising the negative aspects of it: 'schools socialise
children' is equally true but leaves out the negative implications.
And the Oath is part of the indoctrination/socialisation. So are the Christmas and Easter activities, and the cheer squads for the sporting teams, and wearing the school uniform (if there is one - they are common but not universal here in Oz), and how to flick paper pellets off the end of your ruler ... the whole lot, good and bad.
I've been there, done that - as a child, as a teacher and as a parent, in several school systems.
Kids need to know all this stuff to survive when they leave school, even if they then choose not to go along with all of it.
None of it is likely to do permanent damage, especially if the home values are good.