Each class is taught by two teachers, one focusing on organic chemistry and related topics, the other on inorganic and physical chemistry topics. There is no coursework and the practical component is assessed internally. In the Lower Sixth, students build on their analytical and practical skills developed in earlier years. One side of the course moves from quantitative analysis into organic chemistry, starting with hydrocarbons and building up in functional group complexity. Pupils are introduced to functional groups not seen in previous years, including ketones and aldehydes, alongside the mechanisms by which functional groups are added or substituted on to molecules. On the other side of the course, the study of atomic structure is followed by analysis of bonding and structure, providing a foundation for studying the main group elements and their compounds and further opportunity for practical analysis. The energetics topic provides an opportunity for a wide range of qualitative and quantitative practical work. In the Upper Sixth, organic chemistry continues as the cornerstone of one side of the course. Topics include carboxylic acids, aromatic compounds, functional groups containing nitrogen, and organic synthesis. On the physical chemistry side of the course, students begin the year by exploring equilibrium concepts using both acid-base chemistry and electrochemistry as platforms with which to investigate chemical equilibria, both qualitatively and quantitatively.