My DS is at a private school, so I have experience of private schooling, but my word Eton was like another world.
Not just the school, but the people there.
There was one prep school being shown around, all in tweed jackets, and to a boy the spitting image of Draco Malfoy (well there was one Chinese boy, but otherwise....).
One of the mothers doing the tour was not quite right in some respect, I'm not sure how but something wasn't wired up correctly or something. She was immacuately dressed, 6-inch heels (pretty daft considering the confirmation letter warns about having a long walk), but she was just bizarre. The admissions tutor said 'we have a waiting list of 80 boys and typically 35% of these will make it through', and she asked afterwards 'so 80% of the boys from the waiting list make it through?', and it was then explained again, but you could kind of hear the cogs going round and she clearly didn't get it. She had asked several other similar questions; e.g., it was explained that some Houses are catering and others go to a central cafeteria, so she then asked 'so they all eat in the cafeteria'? She pointed at the Fives Court and asked me 'what do they play here?' I said 'Fives' 'Is it squash?', she said. 'No, Eton Fives.' 'So is it squash?' It seemed as if this woman had had the benefit of the 'Finishing School for the Terminally Dim', because she was otherwise every inch the presentable upper middle-class wife.
Another family had a son who looked the prototypical pre-Etonian, and sure enough Daddy spent the tour braying on about his House when he had been there.
The facilities were extremely impressive, although they didn't bother to show us any of the academic parts, and basically the impression was 'if your son is incredibly pushy and self-motivated, send him here and we will teach him to be entitled'. They said 'every year we reject about a third of the highest performers on the test', essentially because they aren't pushy enough. (The House Mistresses seemed quite nice though.)
Fantastic training for future managing directors and whatever, but not for us.....
Well worth it to sign up for a tour, very illuminating. They take about 100 a day from what I can see, so obligation at all....