On 1 May 1933, the college handed over the administration to the De La Salle brothers and shifted to the current location, its first director was Rev.

Messrs Len Karunaratne, Peter Lawrence Perera, A. G. Cambal and Roach were former head masters.

Sinhala, Tamil, English languages which were converted to multilingual medium college on 1 May 1933, handed over the administration to the De La Salle brothers and its first director was Rev.

The college was founded and formed under the mantle of De La Salle Christian Brothers on 17 September 1933.

Valence Mendis, Bishop of Chilaw and Frank Marcus Fernando, Bishop Emeritus were co-celebrants of Holy Mass at Our Lady of Mount Carmel Cathedral, Chilaw on 17 September, followed by a procession to the venue at St. Mary’s College where a meeting was held with the guests, students, parents and well-wishers.