The philosophy of education is the branch of applied philosophy that investigates the nature of education as well as its aims and problems. It also examines the concepts and presuppositions of education theories. It is an interdisciplinary field that draws inspiration from various disciplines both within and outside philosophy, like ethics, political philosophy, psychology, and sociology. Many of its theories focus specifically on education in schools but it also encompasses other forms of education. Its theories are often divided into descriptive theories, which provide a value-neutral description of what education is, and normative theories, which investigate how education should be practiced.

Education is the transmission of knowledge, skills, and character traits and manifests in various forms. Formal education occurs within a structured institutional framework, such as public schools, following a curriculum. Non-formal education also follows a structured approach but occurs outside the formal schooling system, while informal education entails unstructured learning through daily experiences. Formal and non-formal education are categorized into levels, including early childhood education, primary education, secondary education, and tertiary education. Other classifications focus on teaching methods, such as teacher-centered and student-centered education, and on subjects, such as science education, language education, and physical education. Additionally, the term "education" can denote the mental states and qualities of educated individuals and the academic field studying educational phenomena.