12 schools! Wow that is impressive. We did 6 (2 per day) a couple of years ago, and that was logistically challenging enough coming from Cal. But it was also super fun, quality time with kiddo. You get to learn a lot not just about the schools, but about your child.
Sounds like you did a great job with it all. We saw a few on your list, and our impressions were similar. The touring is so hard- like being a kid in a candy store. The schools are all amazing and special and strong in their own ways. The challenge is figuring out how it would actually be for your kid to live and grow in that different environment, far away from your influence. Especially coming from California- for my kid anyway there was a culture shock component to figure out.
Well done!