Yes, it's called Norwich School for Boys, but it also can be shortened to "Norwich School" for brevity. There is no constructive, sensible reason why you would need to inform readers that he went to an all boys school, unless you are covertly trying to include underlying humour, very much in the same manner as the vandals, when they speak of, "school for homosexual boys". Since there ARE such schools in the UK (albeit quite rare and low key, if you take my meaning), it would be awkward to include even the line "school for boys".

Lastly, there is no corelation between the two examples you used in an attempt at an analogy. How does fascism relate to boyhood (even metaphorically)? Thus, "Mussolini the fascist" reduced to plain "Mussolini", does not corelate to "Norwich school for boys" reduced to plain "Norwhich school".CaptainSurrey