Isabella Thoburn College has well-structured and regularly updated internal evaluation system. It is a continuous and interwoven with the process of teaching and learning. The Internal Assessment committee is comprised of learned teachers representing various faculties and departments of the college. The Committee forms the schedule for the entire college maintaining the uniformity of dates and providing equal opportunity to all students to appear in the internal examinations. It minimises the clashes between test dates of different subjects. Three tests are conducted in each subject at the undergraduate level. At the post-graduate level with semester system, students are required to appear in one test in each paper in each semester. Parents are also informed about internal assessment and its benefits at the time of admission.