The university provides instruction in both basic and higher education across eleven schools, clustered into three units. Higher education is provided by two units: the Loyola Schools, a group of four schools which provide undergraduate and graduate instruction in the humanities, the social sciences, the natural sciences and engineering, and business management; and the Professional Schools unit, composed of four schools providing professional education in law, medicine, business, and governance. Meanwhile, the Basic Education Unit, comprising the Grade School, Junior High School, and Senior High School, provides education in the K to 12 level. The different Ateneo units' curricula are generally based on the Jesuit education tradition. This is especially pronounced in the Loyola Schools, which follows a Catholic-rooted, liberal arts core curriculum.