1962 saw the first swimming pool in Lucknow and it was at La Martiniere Girls' High School .

District and State meets were held in the LMGHS pool until the pool at the stadium was built.

The first Inter Martiniere Calcutta Vs Lucknow swimming competition was held in 1962 itself and swimming replaced badminton at the meet.

The pool was tiled in 1992 and the filter plant added in the same year.

Class swimming for classes 3, 4 & 5 is held every day during the swimming season (April-October). A large number of students avail this opportunity to learn how to swim. The residential scholars use the pool every evening.

Swimming Camps are held during the summer vacation and more than 200 students enrol for these.

The school has produced very good swimmers at the District, State and National levels.