The primary aim of this research is to assess the digital fluency levels of high school students and to investigate how digital fluency varies according to different variables. The study employed a descriptive research design using survey methodology. A total of 698 students from various high schools in Çanakkale province, Türkiye, representing five different school types, participated in the research. The "Digital Fluency Scale," originally developed for university students, was adapted to assess the digital fluency levels of high school students. Findings indicate that high school students possess a high level of digital fluency. Significant differences in digital fluency levels were observed based on gender, grade level, family-imposed limitations on technology use, frequency of daily internet use, programming proficiency, and the type of device used to access the internet. Conversely, digital fluency levels did not differ significantly based on the type of school, enrollment in a Science and Art Centre, and frequency of daily use of social networks.