Students undertaking an IB (International Baccalaureate) curriculum typically study six subject groups. Three of these are at a high level (with more teaching hours devoted to them) and the other three at a standard level. To complete the IB, the student must also complete a Theory of Knowledge Course (TOK), an extended essay, as well as a separate mandatory programme that emphasises Creativity, Activity and Service (CAS). In contrast, the A-Level approach can really benefit students who have a passion for a particular subject or a desired career trajectory. Students undertaking the A level curriculum typically have the option of choosing three to four subjects from a list of more than 40. The A-Level study programme is divided into Advanced Subsidiary (AS Level) and A2, with 50% of the student’s final grades coming from each of these. Critical exams as well as coursework are carried out in both AS and A2, though there can also separate endorsements for practical skills and the option of an Extended Project Qualification. Whereas IB is graded on levels ranging from 7 to 1, A-Levels follow the standard and more widely-recognised A-E format.