By hosting an international exchange student, you can truly change the world; one person, one family, one relationship at a time. You'll bring the world into your home and gain a new understanding of a different country and culture. And you'll make the American dream a reality for a teenager from across the globe. It's one of the most worthwhile things you can do to make the world a more caring place. Each year, EF Foundation for Foreign Study brings nearly 3,000 students to the U.S. to spend a year living as a member of a volunteer host family and attending a local high school. Families must provide room, board and a caring environment.