"The advantage over an indie is that he mixes with a cross section of society, who are there on merit not money, and I think that is healthy."
No - he's not mixing with a 'cross section' of society. He's mixing with bright, hard-working children from supportive families. His class won't include children who are struggling academically, it won't include children whose families aren't interested in education, and there will be disproportionate numbers of m/c children, and children from graduate families.
From the Sutton Trust report:
"The Sutton Trust was quoted by Jonathan Brown in the Independent in a report on new grammar school research.
Grammar schools contribute to social inequality and lead to a widening of the income gap between rich and poor, according to new research.
The study represents the starkest evidence yet of the long-term harm suffered by those who miss out on grammar school places – as well as of the impact of selective education on the communities where it has been preserved."
"A 2013 study by academics from the Institute for Fiscal Studies, the University of Cambridge and York University found that more than four times as many of the 22,000 Year Seven entrants into grammar schools each year were likely to come from private schools, compared with those on free school meals."
"well that sounds like the government's pupil premium to me."
The pupil premium is less than £1K per annum per pupil. Outside London each secondary state school place costs the tax payer about 5K per year. A private school place costs 12 - 15K.