The College of St Thomas the Apostle, popularly known as "S. Thomas' College", is a private Anglican school providing primary and secondary education in Sri Lanka. Former pupils include four former Prime Ministers of Sri Lanka. The College which is under the Anglican Church of Ceylon, is run by a Board of Governors which is chaired by the Anglican Bishop of Colombo, who is also known as the "Visitor of the College". The administration of the College itself is headed by a warden. Admission to the College is at the sole discretion of the warden. There are three academic terms in the year The College consists of three schools - Upper, Middle, and Lower. There are 5 Houses at STC, four of which are "day houses", for those who do not live in the Boarding House. It was in the time of Warden McPherson that an organized house system was introduced, so to encourage boys to take part in extracurricular activities. In 1926, the day boys were divided first into 5 houses, namely Wood, Buck, Stone, De Saram, and Miller-Coppleston. Boys were allotted in them according to the location of their residences. Wood house consisted of boys from Ratmalana, further south and from Nugegoda and Borella.