High Court judges or those who carry out work on behalf of the Inn, be it on committees or through the training of students and other junior members. The senior bencher of each Inn is the Treasurer, a position which is held for one year only. Each Inn usually also has at least one royal bencher. They may also appoint honorary benchers, from academics, the world of politics and overseas judiciary. The Inns of Court no longer provide all the education and training needed by prospective barristers, who must pass the Bar Professional Training Course, but do provide supplementary education during the 'Bar School' year, pupillage and the early years of practice. All prospective Bar School students must be a member of one of the four Inns, and must attend ten (formerly twelve) 'qualifying sessions' before being eligible to qualify as a barrister. Qualifying sessions traditionally comprise formal dinners followed by law-related talks, but increasingly the inns offer training weekends that may count for several sessions' worth of attendance. The Inns still retain the sole right to call qualified students to the bar, which is associated with a graduation ceremony ('Call Day'). Prospective students may choose which Inn to apply to for membership, but can only apply to one Inn for scholarships. It makes no long-term difference which Inn a barrister joins; an applicant might, for example, choose a particular inn because he or she knows someone already a member, or it has a student association at their university. The inns' disciplinary functions are carried out by a joint Council of the Inns of Court, which administers the disciplinary tribunals. Barristers are prosecuted by the Bar Standards Board. Location and layout The four inns are located near one another in central London, near the western boundary of the City of London. Nearby are the Royal Courts of Justice, which were moved for convenience from Westminster Hall to the legal quarter of London in 1882. Middle Temple and Inner Temple are liberties of the City of London, which means they are within the historic boundaries of the City but are not subject to its jurisdiction. They operate as their own local authorities. These two Inns neighbour each other and occupy the core of the Temple area. The closest Tube station is Temple. Gray's Inn and Lincoln's Inn are in the London Borough of Camden (formerly in the Borough of Holborn) near