The school library is a place for students to find information. Due to the various information provided inside, students have many choices in finding the information they need. Therefore, school libraries should have a strategy to maximize their services. This study aims to determine the motivation of high school students in Surabaya in utilizing their school library. The method used is descriptive quantitative approach. The sample of this research is high school students in Surabaya selected using multistage random sampling with a total of 200 respondents. The data were collected through questionnaires. The results of this study indicates that the main motivation of high school students in Surabaya in using school libraries is the comfortable space, invitations from friends, completing schoolwork, love for reading, recommendations from teachers, prestige, and spare time. Based on these findings, the school library can provide services that go in accordance with the expectations of the users.