Which school is this in Greenford in 1930

[ValJJJ]

A relative is pictured in this school photo, captioned 1930 Greenford, which I'm assuming is correct.  The relative was born in summer 1924 so would have been 5 or just 6 in this summer photo.  From two possible addresses at that time, it seems likely that the school is Stanhope, Coston or Betham. One much less likely school is Derwentwater in Acton.

Anyone seen/have any archive classroom photos of these three schools to try to narrow it down?  Ealing archives don't, but I've written to the schools in case they do.

Here's hoping a Rootschatter has a family photo in the same classroom.

Thanks.
Val