If the HGS teaching back in the 50’s was assessed on a sliding scale it would probably be more middle brow than high brow. I am Impressed to find that some posters have found a method of communicating on a private messaging level, bypassing us thickos!!
Used colloquially as a noun or adjective, "highbrow" is synonymous with intellectual; as an adjective, it also means elite, and generally carries a connotation of high culture. The word draws its metonymy from the pseudoscience of phrenology, and was originally simply a physical descriptor.