Complete rebuilding of the Barker Road campus took place in the late 1990s, with ACS (Barker Road) temporarily relocating during the project. The school ultimately split into primary and secondary school sections, the latter retaining the Barker Road suffix and the former becoming ACS (Primary). On 4December 2002, the two schools, ACS Oldham Hall, the Methodist Church in Singapore and the Barker Road Methodist Church moved back to the newly built campus at Barker Road. The Deputy Prime Minister of Singapore, Dr. Tony Tan, opened the new school on July 15, 2003.