This report summarizes a study published in 1967 by Harvard University which assessed foreign language proficiency of U.S. college seniors majoring in French, Spanish, Italian, German, and Russian. The measures used were the following: the MLA Foreign Language Proficiency Tests (Form A): Listening, Speaking, Reading, and Writing; the Modern Language Aptitude Test, Sections 3-5; Questionnaire for Foreign Language Majors; and Questionnaire for Foreign Language Department Chairmen. After identifying factors associated with language achievement, the study suggested improvements in American foreign language teaching, including the advocacy of Foreign Service Testing. The major conclusion was that generally the level of achievement among foreign language majors at the senior level and that of teachers at the NDEA Language Institutes is poor. These findings are relevant to Peace Corps language trainees, whose level of proficiency is very high. (AM)