The 1980 Census of Population and Housing Summary Tape File (STF) 3F contains the responses to the extended questionnaire summarized in STF 3, aggregated by school district. The file contains sample data inflated to represent the total population, 100% counts, and unweighted sample counts of persons and housing units. Population and housing variables covered include those associated with demography, socioeconomic status, educational background, occupational status, military status, transportation arrangements, income, and living arrangements and accommodations. The data available on this file are based on the 1980 census sample. The data are estimates of the actual figures that would have resulted from a complete count. The record count for school districts is 16,039, and that of the county component is 9,825. TYPE OF SURVEY: Census. POPULATION: School Districts. SAMPLE: Housing Units in the United States selected to complete an extended questionnaire. RESPONDENTS: United States Households. FREQUENCY: Decennial. YEAR OF LATEST DATA: 1980. (TJH)