Southbank International School
|Executive Principal||Siobhan McGrath|
Southbank International School is a coeducational independent school located in the City of Westminster, Kensington and Hampstead, London, England. It is an international school for 3 to 18 year olds, from Early childhood to Key Stage 5. It has three campuses serving the educational needs of the international community in central London and surrounding areas.
It is an International Baccalaureate World School, authorised to deliver all three of the IB Programmes.
Southbank Hampstead and Southbank Kensington are both International Baccalaureate Primary Years Programme (“IB PYP”, from Early Childhood to grade 5) schools. Southbank Westminster offers the IB Middle Years Programme (grade 6 to 10) and the IB Diploma Programme (grades 11 and 12).
The Southbank Westminster campus occupies two sites at Portland Place and Conway Street (by Fitzroy Square). In 2017, the school announced further expansion plans of the Westminster campus on Cleveland Street, which is very close to the Conway Street campus.
Southbank International School was founded on 12 September 1979 as the American International School. It opened in September 1980 in a disused primary school on the south bank of the River Thames near Waterloo station with 80 upper school students. In line with its founding principles, the school's name was changed to Southbank American International School, following staff and pupil suggestions.
In 1982 the school moved to Eccleston Square near Victoria Station and by 1985 a secondary section was added, and the IB Diploma Programme was eventually adopted. In 1987 the School's name changed again to Southbank International School.
In January 1989 the School moved to the present Kensington campus, and with a growing demand for places the Hampstead campus opened in September 1996. In June 1996 MYP authorisation was achieved and this was followed in June 2000 by PYP authorisation.
The Westminster campus opened in September 2003. In December 2006 the Milton Keynes based private company Cognita became the major shareholders and Southbank International School became the first in Cognita's international division. Cognita has run into serious criticism of its management of Southbank International School with a parent group claiming it has "no serious interest in maximising the educational experience of ... children if it impacts on their bottom line". Cognita denied the allegations, claiming that its profits were in line with others in the sector.
Cognita provided funding to open a IB Diploma Programme Centre on Conway Street for Grades 11 and 12 and this operates as an annexe to the main campus on Portland Place. The Conway Street building opened in August 2007 and students from the Middle School in Hampstead (grades 6, 7 and 8) joined the Westminster campus. Hampstead then became a two class entry Primary School for 3 to 11 year olds.
Robert Booth of The Guardian wrote that in 2009 the school "was undergoing a period of turmoil" as several parents criticized the operation of the school, leading to a parental group criticizing Cognita that was established in 2011.
In August 2012 Cognita acquired the Charteris Sports Centre in London as a facility for Southbank International School which is let out to the community in non-school time.
In 2013, students from the school performed at the United States Academic Decathlon. Southbank's Grade 10-11 team came in ninth with a national Silver in Interview and two scholarships for academic excellence, whilst the Grade 6-9 team came in fifth and were awarded with ten national medals.  In the same year, the school launched an IB Diploma Scholarship that covers 100% of tuition fees over two years.
The 2014 Diploma Class achieved the second highest results in the history of the school. IB Results: 1 student scored the maximum 45 out of 45 points; The average diploma score was 35.5; The world average is just over 29; 9 students out of 47 scored 40 points or higher (reached by only approximately 1.8% of candidates awarded the Diploma worldwide); 4 students gained 44 points (achieved by only about 0.4%of candidates awarded the Diploma worldwide); The pass rate for the Diploma was 100%.
In March 2014, William Vahey, a teacher who had worked at the school for several years, was found dead. He had been jailed for child sex offences in California in 1969 and it is thought he had abused students at the school.
Southbank International School has since been praised by regulatory and statutory bodies for the transformation of safeguarding practices and processes in the school which were deemed as "comprehensive and robust".
In 2017, the school announced further expansion plans of their Westminster campus on Cleveland Street. The new campus will offer five floors of relatively open plan space the IB Diploma students and it is due to open in September 2018. 
Its students come from families that are generally very wealthy. Robert Booth of The Guardian wrote that a parent told him that the school "gave you a different understanding of wealth" and that a lawyer's family would be considered poor there; students included those from families of foreign affairs officials, hedge fund managers, managers of oil companies, and a manager of a football club.
- International Baccalaureate Organization
- IB Primary Years Programme
- IB Middle Years Programme
- IB Diploma Programme
- "Westminster Campus Expansion - Southbank International School". Southbank International School. Retrieved 2018-03-02.
- Daniel Boffey (10 April 2011). "Free schools: private firm Cognita 'milked profits'". The Observer. Retrieved 14 April 2011.
- Booth, Robert. "How did one of the worst paedophiles in history get away with his crimes?" The Guardian. June 14, 2016. Retrieved on June 20, 2016.
- James, Deneslow. "Charteris to Remain a Sports Centre". Retrieved 1 June 2013.
- "Southbank at the United States Academic Decathlon". Cognita Schools. Retrieved 13 May 2013.
- "Southbank International School launches £50,000 IB Diploma scholarship". London's Top Schools. 2014-12-06. Retrieved 2018-03-02.
- "Milton Toubkin Diploma Programme Scholarship - Southbank International School". Southbank International School. Retrieved 2018-03-02.
- "BBC News - FBI probe teacher William Vahey who 'abused boys in UK'". BBC Online. Retrieved 24 April 2014.
- "Southbank International School was warned over vetting processes". Retrieved 24 April 2014.
- "Global Insights: November 2016". Issuu. Retrieved 2018-03-02.
- "Our School." Southbank International School. Retrieved on June 20, 2016.
- Weissenstein, Michael and Tami Abdollah (Associated Press). "‘He ate the cookies, too’: Police search for victims of prolific pedophile who drugged students around the world before abuse." National Post. May 13, 2014. Updated January 25 (year unstated). Retrieved on June 20, 2016.