GCSE noun definition in Exams and assessment topic from the Oxford Advanced Learner's Dictionary

GCSE

 noun: Exams and assessment topic
the abbreviation for General Certificate of Secondary Education (a British exam taken by students in England and Wales and some other countries, usually around the age of 16. GCSE can be taken in any of a range of subjects.) She's got 10 GCSEs. He's doing German at GCSE.