The Programme of Basic School (Key Stage 3) covers most of the English National Curriculum (combined with Georgian National Curriculum) and forms the basis of studies for all students in Years 7 through 9. Students at this stage begin the transition from primary to secondary school. The National Curriculum is a comprehensive course of studies that includes twelve different subjects: Georgian, English, Mathematics, Science (Chemistry, Biology, Physics), History, Geography, Modern Foreign Languages, Art, Music, Citizenship and PE. Subjects are delivered in a circular method so that topics are returned to in a way that allows students to make connections between varied issues. Learning at all ages is differentiated based on the individual needs of children, including ability and background, in mixed ability classes.