@ClariceQuiff
If you think 'Those Dreadful Children' is bad, try 'The Put 'em Rights'.
Bunch of upper-middle-class children take it upon themselves to put various forelock-tugging villagers 'right' - except one of the children is working class and doesn't know his place - but it's OK, by the end of the book, he learns to stay obediently within the realm of his fellow paupers.
That's another one I've never been able to bring myself to reread since childhood, and in fairness, I think I was horrified by it as a nine year old, too.
EB, as far as I was concerned, should stick to writing enticingly about picnics (has anyone ever written so enticingly about sandwiches?), encounters with farmers' high tea tables groaning with hams and apple tarts, and forays into little village shops and dairies for ices and macaroons.
@Classica, that's right, the Taggertys! Fortunately for my temper, she hardly ever wrote Irish characters. The O'Sullivan twins in the St Clare's books are described as 'having a pleasant Irish lilt', but other than that, and their name, appear to be standard-issue English schoolgirls. Maybe she just forgot. Probably just as well, or they would have had some bizarre national characteristic like lack of honour and a horror of freckles and swimming (French), fieriness and a tendency to turn cartwheels (Spanish) or an obsession with hairdos and filmstars (American)... 
At least Streatfeild, in The Painted Garden, is mildly satirical at the children's expense when they realise they are the ones considered to have 'an accent' by New Yorkers, and that they are actually foreigners.