Between September 1977 and August 1979, inclusive, over 283,000 individuals took the Test of English as a Foreign Language (TOEFL) one or more times in an International or Special Center test administration, and designated a native country code, selected from a list of over 170 country codes provided in the TOEFL Handbook for Applicants. During this period, 163 countries were named as native countries by two or more degree planning TOEFL candidates. This report provides detailed tabular summaries of information about the candidate population of 138 countries named as native countries by 10 or more degree planning candidates. Section 1 provides a detailed description of the data used in describing the candidate populations and provides information designed to facilitate reading and interpreting the data in the country tables. It also provides a listing of native countries classified according to six TOEFL regions: Africa, Americas, Asia, Europe, Mid-East, and the Pacific. (For smaller country contingents, data for several successive testing years will be needed to provide reliable estimates for subgroups within the candidate population). (PN)