For the requirements of various Central Government employment, Staff Selection Commission (SSC) conducts Combined Graduate level Examination in three stages.

Tier I  selection  test includes the following modules: :: Quantitative Skill :: Reasoning Skill :: Verbal Skill :: General Skill General Studies includes physics, Chemistry & Biology in General Science and History, Geography, Economics and Politics in Social Science and General knowledge and Current Affairs.

After clearing Tier I exam, Tier II and Tier III  exam will conducted.
For all levels of  selection C-CAT offers separate programs ranging from three months to six months