<p>NewHavenCTmom - AFS is terrific. I had/have 11 AFS host siblings (in touch with most of them). My son is abroad now but he is with Rotary. They are a much larger force where I live in upstate NY. The program is also half the cost of AFS and we were able to fund-raise locally. My unofficial 3rd son just got into NSLI-Y. It is fully funded. He is going to Amman, Jordan for almost 7 weeks this summer. NSLI-Y is slightly different from AFS & Rotary. It is much more language learning focused. AFS & Rotary are more focused on the culture. My son is in Turkey and he loves it. He is the only one in a group of 40 or so students who did not get his country or language request but it turns out he is just thrilled with how everything turned out.
There is another thread on this site that mentions some other exchange programs as well.
Good luck.</p>