@fivecandles:
'From that they can estimate their own chances but there's no such thing as 'unbiased'.'
I am using the statistical definitions of the terms 'bias', 'biased' and 'unbiased'. If you wish to be taken seriously in a discussion about statistics I suggest you learn what they are.
'But it's not about YOU is it?'
Actually, in this context, it is. I was addressing your allegation that I was underplaying the statistics.
'And there's no SEEMS about it.'
Actually, there is. 'long' is a relative term, not an absolute. People's frames of reference determine long and short.
'Statistically students' chances are slim.'
Ditto with 'slim'. How many of your students or their parents buy lottery tickets? The odds of even a £10 payoff are far lower than 22%, and yet so many people play. And I think that 10:1 is a very, very low estimate of the payoff of an Oxbridge place compared to the effort of an application.
'There were 3,200 places at Oxford this year and 17,000 applicants. If there were 17,020 applicants there would have been 20 more rejections.'
True. But my point is that, if the 20 extra applications were from state school students, another 4-5 places might have gone to state school students, therefore only 15 more rejections for state school students. What's your point? That the next 20 state school applicants would have exactly 0 chance of being accepted? Do you believe that Oxford has a fixed quota for the number of state school acceptances?
'I have seen time and again one student chosen over another who in my professional opinion (and the opinion of colleagues who have taught them) is a better candidate.'
Which I take as support that my probabilistic model is a more realistic description of the process than your deterministic model.
'No amount of well-timed advice dissuaded my student from her choice to become a hairdresser. Sometimes teachers cannot compete with peer or parental or media influences.'
But you tried. And I think she was fortunate to have a teacher that did. But whilst this student did not respond positively, I'm guessing that some of your students in the past have.
'It is very hard to persuade a Muslim girl from a traditional and poor family that it is worth getting into debt which is against their fundamental ideology to go and live hundreds of miles away from her family and study at Oxbridge.'
You don't need to convince me of this. Did you not read my discourse on Henrietta Barnett School a few days ago?
'It is wrong to assume that teachers are not providing good advice and not doing everything they can to raise aspirations.'
I am assuming no such thing. Well, I do assume that some teachers are providing imperfect advice because, I don't believe that 100% of people in any field are perfectly competent and I also believe that mistakes are made. But I do not assume it is from any malicious intent.
'But teachers are not miracle workers.'
When did this discussion move from being about state school students to being just about their teachers?
'My arguments are based on facts and the rality of teaching in a deprived area.'
Your arguments are based on a relatively limited data set and, while they should have significant veracity in describing your own school, should be treated cautiously when generalized. You yourself assert that you are 'an outstanding grade 1 college according to Ofsted' which implies that your school is not representative of the population of schools as a whole.
'Your arguments are based on hypothetical scenarios and an assumption that if only teachers were giving the right advice and students were a bit more clued up more kids from state schools would get into Oxbridge.'
Substitute 'if only students were given the right advice' for 'if only teachers were giving the right advice' and you're most of the way to my argument. I make no claim that it is necessarily teachers who should do more. Also, my arguments have generally been supported by empirical studies using data sets which I'd guess are larger, more controlled and more representative than your own personal experience.
I've actually been more impressed with some outreach programs that seem to have made a difference in getting more state school students to apply - and be admitted - to some top universities. Again, from the Sutton Trust:
"The results ... [have] shown that almost half (45%) of the first group of students to benefit from the project were admitted to research-led universities, compared to just one-fifth (21%) of similar students.
The programme was also found to boost the likelihood of students entering higher education in any form (87% compared to 65% of the comparator group) and to cement their aspirations towards further study."
www.suttontrust.com/news/news/innovative-access-scheme-hailed-a-success/