St. Andrew's School (abbreviation: SA) is a family of schools in Singapore, affiliated to each other as well as to the Anglican Diocese of Singapore. It comprises St. Andrew's Junior School (SAJS), St. Andrew's Secondary School (SASS) and St. Andrew's Junior College (SAJC). The schools are often referred to as The Saints' Family.
Together, the three schools offer primary, secondary and pre-university education (otherwise known as Grades 1 to 12), having an enrolment of 4000 to 5000 students.
SAJS and SASS are located in the Woodsville Campus, while SAJC is located across the Kallang River in the Potong Pasir Campus. Both campuses are linked to each other by the Jacob Ballas Bridge, forming St Andrew's Village (SAV).
The junior and secondary schools have always only admitted male pupils, but female pupils were admitted to the pre-university or 'A' level classes when they were run from the senior school previously. St Andrew's Junior College has always been co-educational since being separated from the secondary school.
The school is also affiliated with other Anglican and Presbyterian schools in Singapore, including St Margaret's Primary School (St. Andrew's Sister School), St Margaret's Secondary School, St Hilda's Primary School, St Hilda's Secondary School, the Anglican High School, Presbyterian High School and Kuo Chuan Presbyterian Secondary School.
The name of the school is usually abbreviated as SA, or sometimes as SAS. Its pupils and alumni ('Old Boys' and 'Old Girls') are referred to as Saints. The alumni for all former students of St. Andrew's School is St. Andrew's Alumni, and was formed in 1921.