I'm at Michael and Anna's school a couple times a week, and have noticed that teachers often stop children due to manners. "Where are your manners?" or "Please mind your manners!" or "You are being rude!" or my personal favorite, "MANNERS!" I've heard that word more in the past 3 1/2 months than I recall hearing in my collective schooling from 5-21 years.
People in general widely recognize the concept of the English Gentleman--I always think of the display at the museum in Pittsburgh of "The English Gentleman" during the French and Indian War, for some reason, and my Dad has a joke about how you want a French chef, Italian lover and British police officer. And we watch Downton Abbey and Brideshead Revisited as distinctively British shows not only due to the accents but the politeness, restraint and mannerly-ness of the people.
The pupils at St. Peters are called out on manners a lot in cases that I think would flit by more easily in an American public school, at least based on my own experiences. Aside from the consistency of pleases and thank yous, I've seen children called out ("Manners!") for not quickly saying "excuse me" or "sorry" when accidentally bumping someone, for squeezing through a door past someone else, for "snatching" (rather than politely taking) paper from the teacher, speaking without being called on, cutting off someone mid-sentence, trying to dominate the discussion, taking more than one's share, being too loud...
When I helped out at Christmas Gift Afternoon, I was all smiles as children said lots of "Yes, please" and "No, thank you" and "Sorry" and "Excuse me". Most children were very considerate of the people around them, keeping the gifts in order. There were two brothers who accidentally walked off with some socks. A few minutes later, the boys came back: "May we buy this? I'm so sorry but I believe we walked off without paying." I think most American kids would do the same thing but perhaps state more to the point "Sorry, I forgot to pay. Here you go." British children/people leave a bit more room for their own error.
During Michael's class Christingle play, I liked seeing the representation of American Christians. While they correctly pointed out the diversity of America, the kids were dressed in the standard jeans, baseball caps, cowboy hats, sweatshirts, flag colors. They looked like Americans--casual, less about the formality of manners.
Funny, I happened to catch actress British Emma Watson (who played Hermione in Harry Potter) on the Ellen Show the other day talk about the difference between dating boys from America and England.
"English guys are very well put together... They dress really well and they are very well mannered. But they are also very restrained.... [American guys] are very like open and very straight-forward—but they wear flip-flops and I don't know if I like that."
I laughed out loud not just at the general, "oh I get it" but the fact that I can see that plain-as-day developmentally and culturally when I go into the school here compared with what I know of American schools and homes.