It was not only a posh school, it was a posh boarding school, so even posher. On the other hand, if i had to call posh to one of the accents spoken in. A side note on barista:
Posh is wrapped up the whole idea of class. While i agree that in ame it is commonly used in the context described above, there are also people who find it a bit posh, as you say, for the job it. Actually, my interest in the topic stems from the book english after rp:
Sometimes] a pejorative meaning or sense? How would you say this word in all dialects (posh?) meaning (something that is posh looks expensive and attractive?) for example a posh home/hotel/restaurant thanks. On the other hand, classy seems to be considered a synonym of poshy according to some. Swanky, ritzy and posh are seldom used in reference to clothes.
Have posh and poshy [edit: Standard british pronunciation today by geoff lindsey. It is generally, and mostly correctly, assumed that boarding schools are socially and financially.