Views from an OH (…perhaps slightly biased: as you probably know we’re a rather tribal lot!):
Given its North London location, Harrow has been more multicultural than many of its boarding peers for ages; in my day there was already a meaningful number of local Harrovians with Indian or Jewish backgrounds, not to mention contingents from the more traditional overseas markets such as Hong Kong, Malaysia, Singapore, Nigeria and South Africa.
Indeed during my five years there, the head boy one year was of Malaysian-Indian heritage and another year we had a head boy who had mixed British/Malaysian parentage. Being the 1980s, I doubt this was anything to do with PC/wokeness nonsense: it was just Harrow being Harrow.
Since then, the school has remained ahead of the game / gone further along the slippery slope (*delete as appropriate depending on your worldview), partly a reflection of its more metropolitan worldview and no doubt partly due to its proximity to overseas families’ London homes… there aren’t exactly many other boarding schools 20-odd minutes away from Zone 1 by Tube.
You’re correct in saying that the China contingent has grown since then – I notice more surnames with Qs, Xs and Zs – though I’m told that the largest overseas source is Hong Kong, not least with the number of Hong Kongers who have moved to the UK in recent times. I do know that the school is cognisant that the numbers of each non-British nationality should be managed to prevent the school being anything but British.
It's worth emphasising at this point that Harrow remains a very traditionally conservative and conformist school. It’s not a place where boys are necessarily encouraged to explore and develop their own identities to the same extent as elsewhere, or to ‘be yourself’ or whatever the phrase is. One’s primary identity is as a Harrovian – not one’s nationality, religion, or any of the more new-fangled identities that have mushroomed in recent years. I don’t know what they put in the water, but it does seem to work for the majority of us: I’ve had the pleasure of attending OH dinners in four different countries and they all have the same close-knit tribal feel.
Regardless, has the increasingly global nature of the boys changed some aspects of the school? Without being there in person it’s difficult to make a direct comparison, but what I can see from OH newsletters is that the school has become stronger academically than in the past. It’s not a Winchester or a Westminster (and never will be) but its Oxbridge entries are much higher than what it was in my year – there aren’t too many private schools that can say that in the current anti-private school pogrom! – and unusually for a UK school I hear that the Ivy League hit rate in some recent years has been almost on par with Oxbridge.
Have the higher academic standards gone hand-in-hand with a supposed “lack of cultural reference points and different sporting cultural interests ie. rugby and cricket”? From the tone of your statements, you’ve already decided to form your views subjectively. Fair enough, but for the record in cricket we’ve won the Lord’s match for the fourth year in succession; in rugby we are the 2025 national schools champions, having successfully defended our title from last year. Indeed the current England (and Lions) captain Maro Itoje is an OH; as English as English can be unless you’re of the Tommy Robinson persuasion.
So, returning to your original question: whether or not Harrow is the right school for your DS very much depends on what you’re looking for – indeed what sort of future world you think you need to to prepare him for. Harrow – perhaps reflective of London as a whole – is very much outward-looking “Global Britain”. It’s a bit like Wimbledon, or The City, or the English Premier League – inextricably English/British, yet indelibly international at the same time – but perhaps not to everyone’s taste.
If you’re looking for a school that’s more “Home Counties Britain” – more of the “is there honey still for tea?” ilk – then I’d say it’s not the sort of place for you or your son.