The following article documents the expansion of high school exchange programs during the Cold War. It also examines the potential conflicts underlying that expansion, which relied on preexisting networks of government agencies and private philanthropies and sometimes conflated the rhetoric of world peace with a narrower pursuit of American interests. Ultimately, the article contends, experiences abroad prompted teenagers to criticize American foreign policy and to reform their sponsoring organizations along increasingly multilateral, anti-colonial, and socially conscious lines.