Abbreviation for General Certificate of Education, in the UK, the public examination formerly taken at the age of 16 at Ordinary level (O level) and still taken at 18 at Advanced level (A level). The GCE O-level examination, aimed at the top 20% of the ability range, was superseded in 1988 by the General Certificate of Secondary Education (... Found on https://www.encyclo.co.uk/local/21221