The Faculty of Science of the University of Kelaniya consists of eight academic Departments, namely the Departments of Botany, Chemistry, Industrial Management, Mathematics, Microbiology, Physics, Statistics & Computer Science and Zoology. Academic programmes of the Faculty operates on a ‘Course Unit System’ ie a modularized credit based system within a two-semester academic year with end of course examinations. It offers a variety of course combinations designed to provide maximum possible flexibility in the choice of subjects.

Three B.Sc. degree programmes are offered by the Faculty of Science viz, the B.Sc. (General) degree programme of 3 years duration and the B.Sc. (Special) degree programme of 4 years duration, and B.Sc. MIT (General) degree programme of 3 years duration

The duration of a semester is 15 weeks. After 15 weeks of teaching, a study leave period of 3 weeks will be given followed by written examinations conducted within a period of 3 weeks. Examinations of laboratory course units will usually be conducted either during the last week of study or during the study leave period.