St. Andrew's Junior College (SAJC) has its origins in St. Andrew's School, which was founded in 1862 by the Anglican Diocese of Singapore. SAJC is an aided mission school which was started as a vision of faith when the Anglican Church took up the challenge of building a junior college in line with national educational developments in the 1970s. The Lutheran and Presbyterian Churches also joined in the building project. SAJC had its origins as pre-university classes begun in 1969 as part of Saint Andrew's Secondary School. In 1978, the college was formally established with its own campus at Telok Blangah, where it remained for 28 years.