Nearly one out of every four students enrolled in Chicago's elementary and secondary schools during the 1987-88 school year attended one of the city's 450 private schools. Although frequently overlooked by city-wide educational reform programs, the private schools contribute to the urbanization of newcomers to the city, to the stability of neighborhoods, to setting standards for public schools, and to urban civility. The following enrollment trends from 1976 to 1987 are reported: (1) the number of Catholic schools, the single largest group, declined from 291 to 239, and enrollment declined by 25 percent; (2) enrollments at Lutheran schools dropped 35 percent, and 2 elementary schools that closed were reopened as day care centers; (3) the number of other Christian schools, notably those under Evangelical sponsorship, has grown from 13 to 45 and enrollments have increased; (4) the number of Jewish day schools rose from 7 to 9 and enrollments also rose significantly; (5) 3 Islamic/Muslim schools have been established with a total enrollment of 192; (6) the number of independent schools rose from 23 to 32 and overall enrollments increased; (7) the number of proprietary schools doubled; (8) enrolled in the city's 4 Montessori schools remained stable; and (9) the number of special education schools dropped from 75 to 66 and enrollments also declined. The following fund raising initiatives have been used successfully by financially strapped private schools: (1) new corporate and foundation support; (2) support from religious organizations; (3) multiplying scholarships; (4) community initiatives; and (5) outreach programs. Statistical data are included on five tables. A list of local associations and central offices for private schools is appended. (FMW)