I have a theory.
The only way to get a decent education these days is to attend one of a handful of schools (mostly very expensive fee paying ones) and thence to University (again only a very expensive one will do it ~ forget all these ex-polytechnics). The only people who can afford this for their children, under the conditions created over the last eleven years, are the offspring of the ruling elite (Look at Blair and Co's children to see what I mean).
Having just about bankrupted the old aristocracy who led the country naturally and scrapped the House of Lords by filling it with miners, lawyers and the like, the "Career Politicians" (and all parties have colluded in this) are now creating a new elite. Themselves and their children.
Look at the Blairs, expensive education for their children, "Town" houses, Country houses (Mansions more like) They are so aspirational it is almost a parody of everyting that Labour used to stand against.
Mark my words "They" have created the new "Aristocracy" and just to make sure their heirs can hang onto it they have killed any chances that the majority of children will ever have by ensuring a piss poor education is the norm ~ what is most galling is that we have let them.