I was living just next to the three primary schools at Margaret Drive, separated just by a fence, in a 3-storey SIT flat where the "New Optometry And Ocular Care Center" now is. There were three primary schools then - Birkhall Primary School,
Strathmore Primary School and Queenstown Primary School. They all existed in the same school grounds, the first being Birkhall Primary School where the present Queenstown Primary School is, followed by the other two primary schools in tandem.
I was studying in Margaret Drive Primary School from 1959-1965, a school then for normal children but it was later demolished. On the same site a new building named Margaret Drive Special School was rebuilt for autistic children. Later it is renamed Rainbow Centre.
Hua Yi Primary School existed on the same grounds as Margaret Drive Primary School but was built much later. You can view the picture of both schools at
http://pachome1.pacific.net.sg/~ylma/margaret.htm, Hua Yi Primary School on the left and Margaret Drive Primary School on the right in the picture labelled "Class Primary 2A". I must thank the person who has posted online these pictures of my primary school as I do not have any.