St Mary’s Convent Primary School is a Primary School situated in the heart of Trim. It is a Catholic School with a Catholic ethos, but where children of other denominations are whole heartedly welcomed and their beliefs respected.  St Mary’s is a mixed Primary School from Junior Infants to First Class and girls from Second to Sixth Class.  The school was first opened in 1868 by the Sisters of Mercy, with 30 children in what is now St. Patrick’s Hall. The building and opening of a new primary school took place in 1924. The Sisters and the people of Trim generously furnished one third of the cost, which amounted to £3,500. The old building, which remains part of Bunscoil Mhuire, accommodated 300 children.

Over the years, extensions including an Assembly Hall were added. Due to the demand of ever increasing numbers, a new building was sanctioned. Work proceedings on the present Primary School were completed in 1978. A major refurbishment(€1.5 million) of the new school started in summer of 2001 and was completed in summer 2002.  At the end of June 2010 pupils were moved back across the road into the new major extension consisting of new classrooms, resource rooms, a library, state of the art computer room and a school hall complete with seating for 300. Enrolments continued to increase after 2010, resulting in a further extension to the school building in 2013. The extension comprised four additional rooms, including two mainstream classrooms. In 2018, following extensive fundraising, our ‘Páirc na Trócaire’ (Multi-use Games Area) was officially blessed and opened by Fr Seán Henry (the school chaplain at the time) and Sr Immaculata (representing the Mercy Order in Trim). Further works ensued in 2021 with more classrooms added. 

In late 2023 A new school principal was appointed. Mr. Fergal Kelly left his role in the Catholic Primary Schools Management Association to take over as principal of St Mary’s. Mr Kelly has extensive experience as a principal of large schools in the area and was on secondment for the last 6 years before taking over St Mary’s on the retirement of Mr. O’ Coigligh. 

In September 2024 St Mary’s opened a new class for Autism in order to cater for the significant needs of children in the Trim area. The school now has four special classes and each class is unique in what it offers the children who need extra support in the areas of speech and language, mild general learning and autism.  . 

At present, there are over 550 children in our school. The seeds that were sown by the Sisters of Mercy have produced a quality education which has endured to the present day.