This report presents comprehensive statistics on the organization, staff, pupils, and finances of regular public elementary and secondary day schools in the 50 States, the District of Columbia, and the outlying areas of the United States. Detailed data are given for the survey year 1969-70, as well as historical trend data for selected items of information. In some instances, data reach back to 1869-70. In addition, national enrollment figures are given for (1) elementary and secondary departments of institutions of higher education, (2) federally operated schools on federal installations, (3) federal schools for Indians, and (4) residential schools for exceptional children. Data are reported on a State-by-State basis. Initial tables provide a historical summary of public school statistics; and data on school administrative units and State, local, and regional education agencies. Subsequent tables provide data on the number of school systems and public schools, the school age population, enrollment, average daily attendance, length of school term, grade enrollments, high school graduates, instructional staff, and the school lunch program. Concluding tables present data on financing public elementary and secondary school systems, including revenue and nonrevenue receipts for public schools, total expenditures, account balances on hand, current expenditures, capital outlay, interest on school debt, and expenditures per pupil. (Author/EA)