Sacred Heart of Mary Girls' School is a Catholic girls' secondary school with academy status located in Upminster, an area in London Borough of Havering, England.AcademicsSHMGS is among the top performing comprehensive schools in London in the examination league tables. It was one of the top 100 state schools in the country in the 2012 A Levels.AdmissionsThe school is regularly oversubscribed. It serves the deanery of Havering and girls from practising Catholic families.HistorySchoolIn 1927 nuns from the Religious of the Sacred Heart of Mary bought Hill Place for use as a convent, naming it the Convent of the Sacred Heart of Mary. Hence the school has been colloquially known as "Upminster Convent School". It was established as a small independent fee-paying day and boarding school called "Convent Collegiate School" catering for girls of all ages and boys up to the age of eight.At the outbreak of World War II the school was evacuated to Chilton House in Buckinghamshire. The school premises suffered no damage during the Blitz despite its proximity to RAF Hornchurch. In 1946 after the war ended, teachers and pupils returned to London and classes resumed. With the advent of the tripartite system, Convent Collegiate became a voluntary aided secondary modern. It turned comprehensive in 1978 when the system was abolished. By then Sisters on staff included Sisters from other orders and the teachers were predominantly lay staff. The first lay headteacher was appointed in 1983.