In the 1960s, the Ministry of Defence proposed to move its main artillery and explosives testing facility at Foulness, at the mouth of the River Thames, to a site between Burry Port and Kidwelly, which was already used in a very sporadic way as an air-to-ground rocket range.
The school is situated in Llanelli's Dafen suburb, although pupils are drawn from as far afield as Carmarthen, Pembrey, Burry Port, Kidwelly, and Trimsaran.