I'm guilty of believing most comprehensive schools are crap. It's not surprising given my own experiences over the years.
I went to a school that managed a 7% gcse grade a-c pass rate with 0 students gaining a place at university the year I left. Its never been above 30% and is now closed. Thats a crap school.
Roll on several years and I live in the catchment of 5 high schools. 4 have been 'Requires Improvement' for the entire time my dc have been of high school age. 1 has been rated 'good' for around 6 or 7 years after being 'satisfactory' before. They do get students into university but its rare for those universities to be Russell Group and they rarely get Oxbridge entrants. I believe its around 3 over the last 10 years but none in the last 6 or 7 years. Thats also crap.
1 other high school was closed and demolished after years of attempts at turning it around. For the last 3 years of its life not 1 student gained a place at a single university. Thats crap too.
My experience is overwhelmingly comprehensive schools are crap.
I really love that so many people think that most state comprehensive schools are good. I would love to believe that too but my experience suggests its a fairy tale.
If you only have the options I have then its going to taint my view I suppose. I dont know anyone who's child attends an outstanding high school or anyone who has the choice of more good rated schools over those that require improvement.
So yes I believe that most state comprehensive schools are crap.