Thank you all for great advice and feedback. He made it two weeks (out of 3).
Today he went home for a home visit with my husband (I am out of town), and broke down. He seemed to adjust for the two weeks, but was quite distraught today. I am returning tomorrow early from my trip and he will not return to camp.
In hindsight, this was a very expensive experiment. Going from home school to 3 weeks away just wasn't a good fit. The Duke people really tried to accommodate, and I think if we had chosen his course better, it might have been different. I really thought he would love being away from us!
I am concerned his independence will be "set-back" but he is quite comfortable doing most other stuff without us, it was the lack of coming home that seemed to bother him.
In most cultures, children/adult children don't leave the home until they get married, even after college! In South America, Europe, Asia, and most parts of the world this is true. We mock this in our culture, even though we are the anomaly. Next summer he will be getting a job!
