<p>I was a Peace Corps volunteer in the 70s and my daughter was a PCV 3 years ago. Two years fly by, and my opinion is that you can’t have a meaningful immersion experience in less time, even if you already know the language (like Spanish). My daughter learned Bambara in Mali, and it took time. Many NGOs and even graduate schools basically require Peace Corps service as a qualifier. I guess it depends why your daughter wants to spend only one year. Teaching English or a Fulbright would be a very different experience from that of a Peace Corps Volunteer.</p>