Nature and nurture effect on likelihood of going to university

I agree that there is nothing new. It is interesting that charges were made for university education for the first time in 1997, and that year was also the last for which a greatly diminished, non-repayable maintenance grant was available. Many young people from poorer families are debt averse, in which case paid apprenticeships are much more attractive. On the other hand, wealthier well educated families will be able to afford extra help for their children and often have a better grasp of the opportunities available. Family tradition plays a part.
Going back decades to when passing the 11 plus exam to gain a place in the academically selective grammar schools was necessary, the more aware and the wealthier often sought ways to improve their children’s chances. Many of the less academic schools had an academic stream which entered them for O levels and were so very popular choices among those of all classes who were aware. There were also many small, non-selective private schools which publicised their O level successes, popular with those who could afford them.