The St. Colurnbas story began in 1985 when Mr Rajiv Shankar & Neelima Singh , the founder of Deoghar granted a lease of building CHANDINI BHAWAN AT BILASI TOWN DEOGHAR to start a school. The Founder " ( His generosity was not misplaced for the Rajiv Shankar & Neelima Singh had indeed established a fine reputation as leading educationists). And they lived up to Reverend Mulligan’s expectations by beginning classes even before the school building was ready. They and three teachers began classes for the first batch of 32 students on 26th * November, 1985, in a rented house.

The school building developed into an elegant edifice under the careful supervision of Rajiv Shankar , Its classical architecture merited a befitting name and it was called St. Columbas, to honour the Irish saint known as the "Dove of the Church". In naming their new venture after the Saint, the leader hoped the school’s students would imbibe his many virtues and values - firm resolve, perseverance, dedication, commitment, brotherhood, service to others and pride in one’s self.

St. Columba’s School officially opened on 03th January, 1986 with Neelima Singh as its founder principal. The new school grew in stature under a succession of dedicated work force and soon became the most sought after school for boys and girls in Deoghar. By the end of the first decade, St. Columbas had emerged as Deoghar’s leading co-edu school with 600 students and 30 staff members. Each year brought more students and very soon, the school ran short of space to accommodate its growing student body. The situation became critical with students seated in the foyer and corridor.