Survey results about the use of computers in independent secondary school libraries are reported, and factors related to the presence of computers are identified. Data are from 104 librarians responding to a questionnaire sent to a sample of 136 large (over 400 students) independent secondary schools. Data are analyzed descriptively to show the extent to which independent secondary school libraries are using computers and for what purposes, as well as to compare different types of schools (such as boarding and day parochial) in these areas. Data are also analyzed inferentially to test for relationships between factors of type of school, budget, and extent of the librarian's education with respect to computers and the presence (number) of computers in the library. The t-test is used to test for significant differences between the means of day and boarding school libraries on several variables. Findings indicate that these independent schools are using at least as many computers as are libraries in other studies. Ninety-three percent fit the profile of high service libraries. Fifteen tables present findings, and five appendixes contain materials used in the study, including the survey form, as well as a table of t-test results. (Contains 41 references.) (SLD)