It offered then the secondary normal course which prepared much needed teachers for the country.

From 1946 to 1977, the school operated only the academic secondary course.

The program at St. Thomas was expanded to include secondary courses between 1884 and 1914.

It offers complete secondary course which copes up from first to fourth year high.

In 1935, the school experimented with a higher secondary course to determine its feasibility.

The student population was 70 for the entire four-year secondary course.

The school originally offered only a first to third year academic secondary course.

But after the school year 1951-52, only a complete secondary course with vocational subjects was offered.

In July 1949, the administration decided to offer secondary commercial course in line with its extension program.

It was during this period that the school received the American government's recognition and a permit to include secondary course.