@Marchesman I assume you do realise that in 1950 we only had around 20 universities and that many poor dc who passed for a grammar, never got to go because parents could not afford the uniform or the “extras” like transport.
My aunt passed but her sister didn’t. Her dad worked in a factory and no one else had a DD at a grammar and she didn’t go. Likewise my DHs dad was ostracized at his factory. There was very much a them and us issue around education with people saying you were abandoning your roots. It’s no different now in terms of not applying to the best universities.
The other is that very very few grammar school pupils went to university in the early 50s. There were hardly any universities! By the 60s, loads more had opened (plate glass universitues). I remember around 2 going to Oxford in the 7 years I spent at my grammar. It was rare. Over half my year group didn’t go to university and it was the same at DHs grammar too. Looking at where boys went from his grammar in the early 70s, (he has his school magazines!): it was local accountants, teacher training, engineering companies, family firms, police, civil service, local authority, surveying, retail management, banks etc. Of course many went on to be professionals but didn’t need a degree. However attending a grammar did depend on background and, to a great extent, ambition mattered in terms of university. This was Bucks and not far from London. The idea that the universities took all grammar dc even 50 years ago is not correct.