Our Lady of Snows Matric. Hr. Sec. School is located at T.Kallikulam, Tirunelveli District. It is run by the Tuticorin Diocesan Association, a registered organization of the Catholic Diocese of Tuticorn. His Excellency Most Rev. Dr. Yvon Ambroise being the President of the Association is the Patron and the Manager of the School.

The Catholic Diocese of Tuticorin, besides taking care of the pastoral needs of three and half lakh Catholic faithful, has also involved itself in the service of the Socio - Economic development of the people of Tuticorin Diocese irrespective of religion and caste. The diocese is running hospitals, homes for the aged and the under privilleged, training centres for women and the marginalized and other such charitable institutions. Education being an important instrument for social change, the diocese also runs 232 educational institutions. Our Lady of Snows Matric. Hr. Sec. School is one among them.