For many years the Office of Education has collected and published statistics of private schools. In 1933 there were on the mailing list of the Office of Education 11,515 private elementary and secondary schools in the continental United States. There are, doubtless, more private schools, but no means are available for ascertaining the exact number. In the spring of 1933 an inquiry form was sent to all the private schools on the list in order to collect information for the regular report of the Office of Education. Replies were received from 8,455 schools. Of this number, 123 had closed and 35 had become colleges. Of those whose reports are used in this study, 582 were schools of secondary grade, 5,697 were for pupils below secondary grade, and 2,018 were schools having both elementary and secondary school departments. Of the 3,060 schools not replying, 2,277 were elementary schools, and 783 were secondary or both elementary and secondary. From the reports received supplemented by information secured from other sources, chiefly the National Catholic Welfare Conference, it is estimated that there are at least 2,324,281 elementary and 345,277 secondary school pupils in all private schools of the United States. In the schools reporting there were 68,307 elementary and secondary school teachers, distributed as follows: Elementary (including nursery and kindergarten schools)--49,132; Secondary--19,175. (Contains 17 tables and 3 footnotes.) [This bulletin was prepared with the assistance of Blanche K. Choate, Julia E. Isdell, and Rose Marie Smith. Best copy available has been provided.]