My husband and I are great fans of the comprehensive system, we live where we do because it is on the edge of the grammar area which means that we do not feel its impact as much as we might.
I am quite clever, certainly clever enough to pass a grammar school entrance - although a lack of coaching may have prevented me from getting a place. However we were dirt poor and my parents did not give a shit about school. I would never ever have been entered for a grammar school test and even if I had passed I would never have gone. My parents would never have paid for me to have a tutor, I would not have had time or space to work through booklets at home, they would never have driven me to test. They would never have bought me the more expensive uniform, they would not pay the bus fare from my council estate and quite frankly they would have been pissed off at the thought of me " commuting" to school - I was needed at home to cook, clean or act as a punchbag.
Thanks to a comprehensive education I managed to do A Levels and get to one of the top universities in the world. I will never be middle class by MN standards but my children live the kind of life that I could only ever dream of. Looking back now my comprensive was not even that good but it provide me with opportunities rather than writing me off as a failure at 11.
My own children go to a comprehensive/ secondary modern, it is in quite a rural area but it is not some mind of idyll. We take in excluded children, we take in children from all kinds of financial backgrounds, we actually take in a relatively low number of children from families where one parent has been to university. It is OFTSED rating good. It is not a true comprehensive because we lose children to the grammar but not as many as we would do if we were a few miles up the road. However every year we send students to Oxford and Cambridge, every year we send students to Russell group universities as well as onto apprenticeships, further education etc. My stepson who was bookish thrived there and went on to the same university as my husband and I. As a bright kid he has been served well by the comprehensive system, as has my more average arty daughter and my more " spirited" daughter .
Our son started in the comprehensive and was excluded, there were further incidents and therefore to prevent a permanent exclusion he moved schools to the grammar. The grammar did not serve him well because he is a young man with complex special needs. He was a young man who needed support in his literacy but was one of the front runners in Science and Maths. He really needs a comprehensive environment, in fact he has just returned to a comprensive to finish his A levels.
It would be quite easy for me - having benefited from the comprehensive system - to pull up the ladder and support grammars because we can afford the travel, uniform, coaching etc. However that would be deeply injust.