Welcome to Our Lady of Mercy Secondary School website. We sincerely hope that your visiting our site will provide you with all the information you may need about our school. Our present school was established in 1965 by the Sisters of Mercy, educating and caring for young women in Waterford since 1900. We now operate under the trusteeship of CEIST and while we are an all-girls Catholic school, we do welcome students of all faiths into our community.