Kalmar "O Level" tana nufin wani nau'i na cancanta a tsarin ilimin Burtaniya, wanda ɗalibai masu shekaru 14-16 suka saba ɗauka har sai an maye gurbinsa da Babban Shaidar Ilimin Sakandare (GCSE) a 1988. "O Level" yana nufin "Mataki na yau da kullun," kuma jarrabawa ce da aka tsara don tantance ƙwarewar ɗalibai a fannoni daban-daban na ilimi. Hakanan za'a iya amfani da kalmar gabaɗaya don komawa ga irin waɗannan cancantar da ake bayarwa a wasu ƙasashe, kamar su Singapore-Cambridge GCE O-Level.