O-Level
The General Certificate of Education (GCE) Ordinary Level, also called the O–level or O level, was a subject-based academic qualification. In Singapore, the O Level qualification is offered jointly by Cambridge International Examinations (CIE) and the Singapore Ministry of Education. The examinations are mainly conducted by CIE, with select subject examinations conducted by the Singapore Ministry of Education, including select mother tongue subjects, such as Chinese, Malay, and Tamil, and also the Combined Humanities (Social Studies) subject.