This study analyzes the information needs of students in general and arts-focused classes at an arts-specialized high school and proposes improvements for school library services. A survey was conducted with all 380 students at Y High School, yielding 268 valid responses. The data were analyzed using descriptive statistics, Chi-square tests, and independent samples t-tests to examine library usage patterns and group differences. Content analysis was performed on responses to open-ended questions. Results show that general class students use the library more actively and report higher satisfaction with its services. In contrast, arts-focused students demonstrate lower usage and express a need for tailored services such as access to arts-specific resources, collaboration with local public and arts libraries, and curated spaces. These findings highlight the need to develop customized library services that address the unique information needs of arts-focused students. This study provides foundational data for developing library services aligned with educational goals and curricula, and offers directions for designing customized library services.