This study presents financial data on Catholic high schools in five enrollment ranges across the country. The two objectives of the study were to acquire general data for national purposes and to develop specific models for managing Catholic high schools. Nine tables of data are available for reference. The first part of this report deals with general and national statistics on operating expenses, enrollment levels, and pupil/staff ratio. The middle of the report analyzes 15 financially sound average schools, divided into five enrollment ranges, as models for management. The last part of the report consists of general comments on financial management, budgeting, and planning. Appendices list the 200 high schools reflected in the report, financial averages and models by school enrollment, and a copy of the questionnaire used to gather the statistics. (Author/LD)