Holy Cross School, Patelbagan, Sundernagar, Jamshedpur, East Singhbhum, is a Christian Minority School founded and managed by the members of the International Christian Women Religious Congregation known as The Sisters of Mercy of the Holy Cross. This congregation was founded in Switzerland in the year 1856 by Theodosius Florentini OFM CAP and Mother Maria Theresa Scherer. The members of this Congregation work in almost all the Continents- America (North &South), Africa, Europe, and Asia.

The Sisters started to extend their services in India in the year1894. Keeping the motto in mind they have established centers in more than 18 states in India up to now, responding to the invitations of different societies and organizations. They serve the nation in various fields like Formal and Informal Education, teacher training, Nursing training, Social Work, Vocational Training Programmes, Hospitals, Care of Old, Widows, Orphans, Physically & Mentally challenged, HIV/AIDS Centers etc. In all these the poor, oppressed and socially less privileged are given priority.

Holy Cross School, Patelbagan, Sundernagar was started in July 2016. This is a unit of Ranchi Holy Cross Sisters Society, registered Society under society’s registration act 21 of 1860. (30 of 73 / 74 Undivided Bihar) and 323 of 2005 – 06 ( Jharkhand)