St. Mary's Senior Secondary School, Moradabad is an Educational Institution, run by the Catholic Minority Community, named the Sister of St. Ann established in the year 1954 and is affiliated to and recognized by the Central Board of Secondary Education, New Delhi.

The Sisters have their houses in India, Italy, U.S.A. Switzerland, Brazil, Mexico, Peru, Argentina, U.K. Philippines, and Cameroun fulfilling its mission of Christian formation of Children and Youth and at the same time renders other charitable services like health care, Social work, village work and education of the poor.

In India it has several School in Andhra Pradesh, Assam, Bihar, Chattisgarh, Goa, Gujarat, Karnataka, Kerala, Maharashtra, Tamilnadu, Uttarakhand, Uttar Pradesh and an autonomous University and a number of colleges.