I enjoyed it when I was younger, but in the wake of Rowling coming out as a trash human, I’ve seen a lot of breakdowns of Harry Potter that highlight that it was actually never good. This YouTube video by Shaun is an extremely thorough breakdown of that stuff if anyone who liked the books read this. In hindsight, I’m shocked by how popular these books were, what with characters like Seamus Finnegan, an Irish character with a tendency to accidentally blow things up (!).
I went to a university where they filmed a bunch of Harry Potter, and whilst the classism I saw was no doubt quite different to your dad’s experience, I think there’s a common core. Big, posh institutions like that like everyone to think that they’re meritocratic, but they’re just prestige machines fueled by classism and racism.