The Sisters of Mercy of the Holy Cross, imbued with the spirit of St. Francis of Assisi and inspired with founders charism of "compassionate love to all", value the apostolate of education a very effective expression of the charism. The motto of the Congregation is "the need of the time is the will of God". Keeping the motto in mind the sisters have established centers in 13 states in India upto now, responding to the invitations of different societies and organizations. They serve the Nation in various fields like, Formal and Non-formal Education , Teachers training , Nursing training, Social work, vocational training programmes, hospitals, care of the old, widows, Orphans and so on. In all these the poor, oppressed and socially less privileged are given priority. We aim at forming fully alive women and men, who will live and work for others and contribute to the building up of just and fraternal society.

Holy Cross School at Tadong, was started in the year 1985 and it is owned by West Bengal Holy Cross Sister Society which is a registered society under the Societies Registration Act 1961. The School is affiliated with the Central Board of Secondary Education (CBSE), New Delhi upto Senior Secondary Standard. The medium of instruction is English.

The School promotes co-education and it admits any child irrespective of caste, creed or social status. Holy Cross School receives no Government or private aid and fees realized from students is the only source of revenue. To keep up with the raising costs and revision in salary, fees have to be adjusted from time to time. The school session is from February to December.

All students are taught the essentials of religion which are acceptable to people of all faiths and efforts are made continually to develop and draw out values in the life of all students.