Would you send your 4yr old girl to a girls 4-18 all-through school, or to a 4-11 co-ed prep, all else being equal? I.e. top academics, similar ethos, location, etc for both? I know some people prefer co-ed, especially for prep/primary school, but does it outweigh the benefit of possibly avoiding the stress of the 11+? Wondering what people here think.