In rugby, ACS has been represented by ACS (Independent) and ACS (Barker Road). These two schools have reached the top four placings in both the "B" and "C" Divisions of the National School Championships. with ACS (Independent) first placed every year. The "B" Division team lost to sporting rivals St Andrew's Secondary School between 2004 and 2007 but have since regained the "B" Division title, after beating St Andrew's 15-3 in 2007. ACS (Independent) also won the International Festival of Youth Rugby 2000 in Wales and the World Minis Under-13 and Under-14 Championships 2001 in South Africa.