This report presents comprehensive statistics on the organization, staff, pupils, and finances of the regular full-time 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 1967-68, as well as historical trend data for selected items of information--in some instances from as far back as 1869-70. In addition, national (but not state) enrollment figures are given for the following types of schools: (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. A recapitulation of the types of schools that operate at the elementary and secondary levels and their respective enrollments is given in table A. 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 a state-by-state basis on the number of school systems, the school age population, enrollment, average daily attendance, 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, current expenditures, capital outlays, interest on school debt, status of school bonds, value of school property, average annual salary of instructional staff, and expenditures per pupil. National totals shown in this report represent summations of the data for the states constituting the United States as of the time the data apply. Thus, for the years 1919-20 through 1957-58, national totals include 48 states and the District of Columbia. Data for Alaska are included in the totals for the United States and for the West and Southwest region beginning with 1958-59; for Hawaii, beginning with 1959-60. Available data are given for Alaska and Hawaii for earlier years, and these may be combined with the U.S. totals when comparable totals for the 50 states and the District of Columbia are needed. [For "Statistics of State School Systems, 1965-66," see ED622264.]