During the past 10 years of collecting school data, the National Catholic Educational Association (NCEA) has received a 100 percent response rate from member schools, according to this overview of enrollment trends and statistics reporting in Catholic schools. The data are compiled into a yearly directory, "Catholic Schools in America," that, in addition to individual school information, displays (1) Catholic school statistics alphabetically by state; (2) archdioceses/dioceses ranked by number of students; (3) states ranked by number of students; (4) number of schools, students, and lay and religious full-time teaching staff; and (5) a complete list of Catholic school superintendents. An introduction to the directory analyzes this data and financial data on the schools as well. Turning to enrollment trends, this overview notes that in every year from 1976 to 1980 Catholic schools have enrolled 6.7 percent of the total number of public and nonpublic school children in the U.S. Enrollment trends in Catholic schools show an increase in minority and non-Catholic students and, regionally, an increase in the Southwest and West. Projections by the National Center for Education Statistics show enrollment in nonpublic schools will increase from 11 percent in 1982 to 12 percent in 1989. The Catholic percentage of the total public/nonpublic market has been stable and, from an enrollment perspective, Catholic schools are holding their own. (Author/MLF)