In order to determine the capacity of high schools to profit from the pre-high school computer experiences of its students, a study was conducted to measure computer utilization in selected high schools of Middle Tennessee. Questionnaires distributed to 50 principals in 28 school systems covered the following areas: school enrollment; number and brand(s) of computers; plans for increasing the number of computers; source of funds for computer purchases; uses of computers; importance of computers as an instructional tool; and type of training received by teachers using computers. Analyses of the data from the 28 usable questionnaires returned indicate that: (1) there were 23,280 students in grades 9-12 enrolled in the responding schools; (2) the total number of computers in the 28 schools was 340; (3) Radio Shack and Apple were the principal manufacturers (84.5%) of school-owned computers; (4) a mean of 12.5 computers per school and a mean of 831 students per school resulted in a computer to student ratio of 0.0150 to 1; (5) if each school increased its computer inventories as planned by the end of the 1987 school year, the total in the reporting schools would be 495, improving the computer to student ratio only slightly; (6) most schools used a combination of acquisition practices for computers; (7) mathematics courses most frequently involved computers in the instructional process; (8) 23 of the responding schools used their computers most frequently in classroom situations; (9) 68% of the schools had computer programming classes; (10) 17% of the schools perceived an improvement in the quality of instruction as a result of computer use; (11) primary uses of school-based computers were for pupil accounting; (12) 32% of the teachers were trained by vendors; and (13) the computer ranked fourth--behind textbooks, the chalkboard, and the overhead projector--as an effective instructional tool. A short list of references completes the report. (JB)