This booklet describes the test used by the federal government to determine oral proficiency in a foreign language. The test is essentially an oral interview, conducted by two testers, and lasting from 15 to 30 minutes, although the format can vary. Proficiency levels range from 0 (for no practical speaking proficiency) to 5 (for speaking proficiency equivalent to that of an educated native speaker). Definitions of rating levels are stringent, and testers are carefully trained in testing methods and proficiency definitions. Accompanying videotape cassettes demonstrate how the test should and should not be administered. Commentaries on both are appended, as well as a detailed description of the FSI (Foreign Service Institute) Checklist of Performance Factors. (AM)