Some great comments and advice. Vividly remember hanging at the back of the tours and observing S’s body language. When he was disinterested, kept to the middle of the pack. When he was engaged and interested, was walking up front next to the our guide and chatting with her / him the whole time. Some of that had to do with the guide so be careful about that, but it was a pretty accurate barometer. At the least it led to wanting to get more information from those schools taking a close look.