THIS year's A-Level Examinations have proved that both arts and science students are capable of outstanding achievements at Maryknoll Convent School. The excellent academic abilities of arts student Christine Liu So-yu and science student Vivien Mak Wai-man won each of them four As in the examinations. Christine, 19, scored A(1)s in Economics, Geography, Liberal Studies [AS] and Use of English [AS]. ''It was unbelievable!'' she told Young Post . ''I am only an average student in class. I never expected to get four As. My parents and I were astonished.'' There was another reason why Christine was so surprised: she did not start studying seriously until the mock examination, which was in May. She admitted that she was not always diligent, but intensive studying for several months made all the difference. Christine, former president of the Legion of Mary, plans to study psychology at the University of Hong Kong. Vivien, 18, scored four A(2)s in Physics, Chemistry, Biology and Use of English [AS]. The only subject both of them failed to score an A in was the new AS-Level subject of Chinese Language and Culture. Vivien believes that a good student should spend time on revision every day in order to avoid the accumulation of study material, which often ''leads to an unwillingness to study at all''. Her interest lies in charity work. She likes helping people, and that is probably why she has applied to study medicine at the University of Hong Kong. Principal Lydia Huang said the school was happy as the two students set good examples for their schoolmates. Mrs Huang also believes that the new AS curriculum does more good than harm to students. ''It provides a greater range of subjects for their development.'' The school's three-A scorers were Oona Robin Lloyd and Joanna Li Hiu-mei. Oona scored A(1)s in Economics, History and Use of English [AS], while Joanna obtained A(1)s in Economics, Geography and Use of English [AS].