I've been in touch off and on with one or two classmates from back then. A couple of them even ended up at Cornell with me. I should track them down again. And I should probably make a point of visiting Hackley on one of my future visits to Westchester. I think about it once in a while, but haven't done it in years and years.
My thoughts are pretty generic "that's a shame" right now, rather than any significant feeling for "my" school. I'm sure if I'd graduated from high school there, I'd care about it more. Apparently, the facade is still standing, and they plan to remodel the building, and classes will start as scheduled in September.