This book introduces Q methodology, a method developed nearly a century ago and now recognized as a comprehensive approach for studying subjectivity in the human sciences. The text situates Q methodology historically and delves into its philosophical and technical aspects in relation to educational philosophy, both at collective and individual levels. It showcases Q methodology's relevance and value across numerous educational domains, including counsellor education, cultural foundations, instructional technology, leadership studies, education policy, teaching practices, educational psychology, assessment, measurement, and child studies. It further speculates on Q methodology's future in education research and offers insights for research across various educational fields. With contributions from diverse applications authored by international educational scholars, this edited volume offers a sophisticated introduction to Q methodology in education. It is applicable to the work of researchers across quantitative and qualitative disciplines in education.