The Drug Prevention Unit of Girls' High School is another active unit of the school.In the year 2009, the DPU (Drug Prevention Unit) organized their DPU day which was called, "Tempora 2009".Which was another achievement made by ladies of High school through many obstacles. The Chief guests were Dr Chandana Jayarathne and Dr. In 2010 the Astronomically Society organized the third step of the journey towards the invisible.The third Astronomical Night organized by the society, "In Quest for Visibility" was held successfully.In June 1920 a plague broke out in Kandy and 262 students were ordered to leave the premises overnight.
This was followed by the 1st Brownie Company and the Ranger Company in 19.
By coming first in the Astronomical quiz competition, Dharmaraja College won the Ruth Allen challenge Trophy.
In 2009, The Astronomical Society took the next step in the long journey towards the invisible by organizing the second Astronomical Night, "The Transition from the Invisible". It was held successfully with the participation of 14 schools. LABROOY challenge trophy was won by Dharmaraja College.
From 1997 the society has arranged some activities, workshops, etc. Year 2006 was a very crucial year for the Astronomical Society of Girls' High School.
Because the society organized a combined project to develop inter-school Astronomy (CPDIA) together with Ranabima Royal College, Kandy.