In 1906 the Sisters of Mercy founded St. Mary’s Secondary School for girls on the present site.
Mother Evangelist McCarthy from Kerry set up the first secondary school.
As there was no proper building at the time, twelve girls began their second level education in an Improvised Intermediate School in the novitiate of Swinford Convent. There was no pressure put on any student to pay the term fee of £1.00 if their family could not afford it.

