first biology classes were started at the College, again initiated by Fr. Blatchford, S.J. In January 1947 the present biology lab was completed and commissioned into operation. Again, these were the first chemistry and biology laboratories on the island: University of the West Indies (U.W.I.) was just being founded. Continuing the emphasis on sciences, the physics lab was completed in January 1953, thus completing the "Faculty of Sciences" at the College. The building was dedicated by Rt. Rev. John J. McEleney, S.J., on Friday, 26 June 1953. Becoming a government school St. George's College decided to become a grant-in-aid school in 1936, and it became a part of the Government's educational system. The Jamaican Government would provide the salaries of the teaching faculty and staff. This new status, however, forced the Jesuits to give up some control of the school to the Ministry of Education. In 1956, the Ministry of Education established a Common Entrance Examination, ending the College's own entrance examination and selection of its students. The Grade Six Achievement Test (GSAT) was initiated in 1998, further regularising the entrance of students. Discipline has always been a strong element of St. George's College, and the College's Merit/ Demerit system was inaugurated by Fr. William Hannas, S.J., in 1940, to maintain discipline but also to encourage a spirit of competition. To this end, Hannas emphasised the English-based house system already existing at the College. The student body was divided into three "houses":Bellarmine, Campion, and Xavier, named after Jesuit saints. Two more houses were later added: Loyola in September 1941, and Regis in the late 1950s. These five houses became rivals for leadership in studies, sports, and discipline. Recent development The campus has continued to grow. In 1950, as part of the College's Centenary Anniversary, the Old Boys' Association made a commitment to construct a pavilion at Emmet Park. This was completed and handed over to the College on 1 July 1951. In 1955, the lawn tennis courts were built. In March 1956, the roadway to link Emmet Park with the rest of the campus was constructed. In 1986 the Abe Issa Auditorium, the Fr. William Hannas Building (which houses the canteen), and the Fr. Crutchley, S.J., Computer Laboratory were completed. Emmet Park was restored in 1991. The USAID-funded Butler building expansion and the Student Development Centre were completed in 1993, and the Archbishop Samuel E. Carter, S.J., Library was completed