Philosophy of education is the branch of applied philosophy concerned with examining the nature, aims, and problems of education. It analyzes fundamental issues in education like what knowledge is worth teaching and the nature of educational justice and equality. It also analyzes specific policies and practices, like standardized testing. The philosopher of education values conceptual clarity, reasoned argumentation, and consideration of all stakeholders in education. Philosophy of education has a long history dating back to Socrates and the view that education should cultivate rational thinking continues to influence the field.