@srparent15 - That ACM looked very much like a CS Learning community (wouldn’t surprise me if most of the students lived there most of the time as well) - heard they are organizing the first ever Hack Illinois (or did last year?). My son has take a couple college courses, one at CMU and one at Harvard (the famous CS 50 which was an absolute blast!!!). When I asked Lenny Pitt about credit from past college courses, he said they have a whole database of college courses from all over the place cross-listed with their own for equivalency and are happy to provide credit/allow for placement tests. If an equivalent is not found and the student wants credit, then it wounds up on his desk.
Yes, Cornell is in the mix and we will see what happens. As far as getting in goes for CS, it’s a coin tossed way, way, way up. Save for his one safety school, we took each outcome as a big fat maybe. Every acceptance is a miracle.