A lot of the private school thing is more about getting the right class credentials though isn’t it? People from Dublin who went to private school seem to be convinced it makes a massive difference educationally and socially which was probably also the attitude of the people who made this documentary if they came from Dublin. So really they would see this as a chance for individuals to escape from the working class through being in a ‘better’ environment.
Thankfully it’s different down the country where the population is mostly just too spread out for this kind of class segregation. In fact, when I was growing up the only private school in the area had a bad educational reputation as being only for the cream, rich and thick.