During the Lent half in D each boy begins to consider the specialist (C and B block) subjects that will prepare him for his university career.
He also chooses a master whom he would like to be his tutor for his specialist years.
Boys almost invariably take up four academic subjects in C leading to either an AS-level, A-level or Pre-U qualification.
The subjects on offer vary in small measure from year to year, but the following are those currently on offer: English Literature; English with theatre studies; mathematics; mathematics with further mathematics; biology; chemistry; physics; French, German; Italian; Japanese; Spanish; Russian; Portuguese; Chinese (Mandarin); history (one chosen from modern or early modern or mediaeval); history of art; geography; divinity; economics; government and politics; art; design;
Boys sit internal examinations called trials at the end of the Michaelmas and, where they do not sit external examinations in a subject, the Summer halves.
A small number of boys join the school at the start of C, either as sixth-form scholars or specialist entrants. Details of the admissions process can be obtained from the admissions office.