@TizerorFizz
I agree that sport is really a non issue in the UK (but not necessarily the US?)
Sporting prowess isn't a determinant for university access as far as I am aware anywhere but in decades gone by I am sure it was in some form (allowing the possibly academically elite sports people into Oxbridge for example). Possibly some any argue sports allow the development of team and leadership skills which may be of interest to employers (?) and we should view education holistically. I think varsity rivalry seems a bit anachronistic really in 2022. As Oxbridge accepts more state pupils the sporting culture may also change (to e.g. football?)
@chopc
Absolutely parental involvement matters and I think gets to the rub of many of the social mobility issues around education in general.
To some extent a lot of universities do make minor provisions in acceptance criteria for pupils from socially deprived backgrounds. The point of note here is that lack of wealth (based on FSM, postcode etc) is a proxy formal of educational opportunity. Why the lack of educational opportunity? Is it that the teaching provision is inadequate - the teachers would vociferously argue not? Is it that children from poorer backgrounds are innately less able to achieve high grades - no in general (and I guess the WP programs at universities are showing this)? So that leaves us with parental and peer influence and to what extent our educational system can account for this is an interesting political debate.
Undoubtedly poor parenting will lead to a massive impact on educational performance in general but there could be an argument that we challenge the causes of poor parenting as well making provision to education. Obviously this is a sensitive topic and being on the whole left wing I would say we generally need to improve socio-economic conditions for society as a whole.
230 or so out of 3600 students at Cambridge this year are from backgrounds where they revived free school meals (presumably low income) and if we compare that proportion with the proportion that is a massive increase. I think this shows good universities are getting better at attracting the brightest kids from the poorest backgrounds.
The problem with underacheivers where the underacheivment is partially or wholly due to parental/peer pressure is really difficult to address morally. Do we give equal educational/career opportunities to those with weaker grades to somehow account for their lack of peer/parental support? Does this have ramifications when we wish to display aspirational role models?
I don't think there is an easy or entirely fair answer to this.