This report is designed to supply school management with data for the school year between the regular biennial reports, the last of which was published for the school year 1977-78. The school staffing ratio data included here are intended as a supplemental update of the 1977-78 report and should be used in connection with that report, which describes in detail the methods and limitations in the study procedures. The general summary data reported here are in 32 tables for school districts by four enrollment categories and by five per pupil expenditure categories. Definitions of these categories and the number of reporting school districts in each are described in detail in Appendix A. In addition, this report shows how a member of the management staff of a specific school district can compute staffing ratios for that school district that are comparable with ratios computed for other districts. A worksheet and examples of the computations are included in this publication. (Author/LD)