This documentation is intended to assist users of the school file which was prepared from information collected for the National Longitudinal Study of the High School Class of 1972 (NLS-72). The school file is a companion to the NLS-72 student-based data file and consists of 1,318 records, one from each high school from which NLS-72 students are sampled. It contains information about the environment, staff, procedures, facilities, and curricula of the sample high schools. This documentation describes the sample design of the survey and is supplemented by appendices containing detailed information about the variables. Appendix A contains the data collection instruments: the School Questionnaire and the Counselor Questionnaires. Appendix B is a summary listing of the 504 variables in the file. The listing provides, for each variable, the variable number and label, the position in the data file, and the corresponding question label. Appendix C is a listing of the frequencies of the responses to each question. (SLD)