Caroline Villa was made available by one Mr. Koko Mackertich, a wealthy Armenian businessman of Calcutta, and a lease was about to be signed when the infamous disaster struck in the whole of North-East India.

Despite the setback, the priests secured the Halcyon House, near the Mall, with an arrangement made with Mr. Graham Hardy for Rs.150/- per month.

The event was followed by the renovation of the Halcyon House which led to a delay in the commencement of the academic year.

The 'official' opening, however, took place on February 19 at the top floor of the present day Bishop's House, in the garret which later served as the residence of the School Headmaster.

The new institution was placed under the care and patronage of a scholar of the 17th century, who had been recently canonized a Jesuit saint.

On May 2, the lease for the well-known Park Hotel was bought by the Archbishop of Calcutta, His Grace Ferdinand Perier, S.J., and the building and property were made available to Fr.

Then a procession was formed: (1) the School Coat-of-Arms - Ad Maiora: (2) the Sign Board: (3) the Park Hotel rickshaw with the picture of the Sacred Heart adorned with Flowers: (4) the boys: (5) the staff.

The grounds of Sunny Bank have been known to host at least three seminaries (training institutions for candidates to priesthood) and many schools.

The then District Commissioner of Darjeeling was against the establishment of the institution with the plea that there was no need for two boys' high schools in the town.

Archbishop Ferdinand Perier, SJ, DD of Calcutta and the Jesuit Superior tended to the opinion that there should be only one high school in the hills run by the Jesuits, at Kurseong, that is, St. Alphonsus High School.

Nonetheless, a decision was made to maintain two high schools, St. Alphonsus and St. Robert's, with a single hostel - Bellarmine Hall (1957–1979), at Kurseong.

The first was the problem of recognition; this came shortly after the District Inspector of Schools, Mr. M. M. Rahman, inspected the institution when it was still in the Halcyon House.

From 01.01.63 to 31.12.1975, this system, with eleven years of schooling, formed a whole generation of graduates, and a decision of replacing the old Park Hotel building with a new structure to cater to the increased enrollment was made.

By 1974, the long work was completed, a souvenir booklet brought out for the occasion by the editor, Mr. J.K. Chettri, M.A., B.T., and today St. Robert's school building stands tall and proud in the heart of Darjeeling town.

The classes of XI and XII are segregated into two sections for students studying the streams of Humanities and Science.

Additionally, the school hosts four houses, each named after the locally found floral species of the Darjeeling Hills to signify different attributes the students inculcate during the duration of their stay as the students of the institution: Each of the houses is led and represented by its respective House Captain chosen by the School Committee in view of all the attributes and skills that the student possesses.