The program evaluated here involved a two-way exchange of students and teachers from a school in Mainz and two high schools in Madison, Wisconsin. Homestay and cultural touring were outstanding aspects of the program. To measure the impact of the program on American participants, tests and questionnaires were administered before and after the visit. These instruments produced evidence that strongly suggests that the program had a highly favorable impact on desire to speak German as well as on self-confidence in self-expression in German. The great majority of students showed considerable improvement in fluency, and there appeared to be a positive carryover into reading ability. Students, who all went into the program with a positive attitude toward German language, culture, and people, had that attitude strongly reinforced. From the standpoint of language learning, the most significant factor appears to be the development of an "integrative" attitude toward the German language and people. The measurement instruments are appended. (JB)