As an Oxford alumni, I would personally focus on this more: "But Oxford wasn’t like that. The teaching was personalised, flexible and interactive. That kind of system keeps people like me in the room, fired up and engaged. Kids like me, who don’t flourish in school, can benefit from such attention, and focus, and belief. A good society would strive to give it to them."
Oxford provides an amazing environment if you genuinely want to learn and improve and the university actually seems to care about you succeeding. The time I spent there remain a decade later some of the most enjoyable in my life.