1970s kindergarten - Sandlin?

Hello, I am wondering if anybody can help me track down the location of the English-speaking kindergarten that I went to in the mid-late 1970s. I'm pretty sure it was called Sandlin, and I lived in the mid-levels but it may have been closer to the harbour or a bit further east. The only thing I really remember about it is the steep staircase which led down to it - which probably doesn't narrow it down much in this area!

I'm about to visit Hong Kong for the first time in 40 years and would love to have a look. Unfortunately I'll be there over lunar new year so can't try my own research in libraries etc, and Google/Google maps have been no help... oh well, at least I remember where my school & apartment were!