This study aimed to investigate the reasons for school absenteeism among students studying at different types of high schools, and school counsellors’ practices and proposed solutions for reducing school absenteeism. This was a qualitative research conducted with a phenomenological design. The study group was formed using criterion sampling, one of the purposive sampling methods. The research was conducted in Turkey during the 2018–2019 academic year with 21 school counsellors working at different types of high schools and having at least 5 years of experience. The school counsellors were asked four questions on school absenteeism using a semistructured interview form. Each interview took 30–45 minutes and interview notes were taken synchronously. According to the research findings, poor academic outcomes, parental involvement, school management and school schedules, as well as health issues and a lack of social activities are the main factors influencing school absenteeism. Potential solutions that can be offered by school counsellors include increasing family involvement, improving the school climate, addressing health issues, planning new social activities and offering flexible syllabus options for students.