These schools form a network of educational institutions mainly located across North-East India and parts of West Bengal, serving students from diverse social and cultural backgrounds. Many of them are managed by Christian missionary congregations, particularly under the patronage of St. Francis de Sales (SFS) and Don Bosco, known for their commitment to value-based education.

The schools offer secondary and higher secondary education with a focus on academic excellence, discipline, moral development, and social responsibility. They often play a vital role in rural and semi-urban areas where access to quality education may be limited. Along with academics, these institutions encourage extracurricular activities, leadership formation, cultural awareness, and community service.