The Office of Education, in cooperation with the Modern Language Association of America, conducted a survey of language laboratories in secondary schools and institutions of higher education during the school year 1957-58. The procedure was to send a short questionnaire to all the schools and colleges known to have a language laboratory and subsequently to additional places suggested by persons returning the questionnaire. The present bulletin contains a summary of replies to the questionnaire and other pertinent data received from language laboratory directors who supplemented the completed form by sending accounts of how their laboratory was established, how it is maintained and operated, how instructional materials are prepared and used, how problems and difficulties are overcome, and other discussions of assistance to persons planning or operating a language laboratory. The laboratories reported are of all sizes, have many types and combinations of equipment, and employ the equipment in numerous ways. The bulletin is intended to serve: school administrators and teachers; laboratory directors and instructors; research directors, teachers, and graduate students; librarians and directors of curriculum centers; and students. Appended are a sample description of the basic design and possible functions or a language laboratory, the questionnaire, and a list of language laboratories (1957-58) in secondary schools and in colleges and universities. (Contains 24 footnotes and 7 tables.) [Best copy available has been provided.]