McArthur, who served in the position till 1991, by which time the school had a well-established reputation and enrolment. Severe floods in November 2005 overflowed the banks of First Creek and caused some damage to the school. Curriculum Marryatville High School was accredited as an international school by the Council of International Schools in 2003 and formed a number of sister school relationships in France, Japan and China. The school specialises in particular subject areas, including music, drama, languages and tennis. Music One of the school's main focuses is music, as the school is one of four Specialist Interest Music Schools in South Australia. The Marryatville High School big bands have also won music competitions around the country, notably at Generations In Jazz several times over recent years. In 2007, the Concert Choir won the SA state final of the inaugural ABC Classic FM Choir of the Year Competition and second place in the national final, and won the Children's and Youth Choir section of the 10th International Choir Festival "Tallinn 2007" in Estonia. The school provides two types of music education in the junior high school, known as Music I and Music II. The Music I program is less intense than Music II, with only 5 lessons of music a week while Music II has 10 lessons. Music II is aimed at musicians with professional music potential, and includes lessons in Musical Development, Theory and Composition, Music Experience, Concert Practice and Choir. Drama The Performing Arts Centre, named "The Forge", is able to showcase drama, dance and musical performances. For the official opening of the school's theatre in 2005, a production by drama students was presented to guests including then South Australian Premier Mike Rann and state member for Norwood Vini Ciccarello. When talking to the cast and crew after the opening show, Mr Rann exclaimed, "I've never seen anything this good, at either a High School, University or TAFE". The drama department performs year level performances for students in year 10, 11 and 12, as well as putting on a Fringe performance in term 1, that for the first time in 2018, included a class of dancers, led by Ms K Cornish. Languages Marryatville High not only has an international student program, but has a large influence on languages for students. All students in year 8 do a language for the year, one of the three, Chinese, French