I presume you have a DS starting in Sept Moguie.
I don't know about values and ethos but this is my experience of the school (my son is in year 8 ). It reminds me of my school days, in a good way, they are firm but fair (mostly).
The school strives for excellence and it is very competitive both academically and in sports, unlike in primary school excellence is rewarded rather than effort, some people may not like that but I do.
The boys can be a bit boisterous at break time and lunchtime. My son who is academically very able and very sporty loves it (never thought I would say that but it is true) he has met a lot of like minded boys. I accept that it won't suit everybody, that said there is a very wide mix of "types" there.
The beginning of year 7 can be very intimidating for some, there are a lot of footballs flying around and the year 7s seem to receive the lion's share of balls hitting them, I presume this type of thing happens in most schools, the older kids flexing their muscles! The school does set up an area inside where the year 7s can go if they don't want to go outside and there is also the library.
I would be lying if I said there was no bullying, but I don't think there is any more than in other schools.
I think it is an excellent school the boys are taught to be independent and I think they prepare them well for the "real" world that awaits them.
I wouldn't send my son anywhere else
