Meaning of A level

A lev•el

Pronunciation: (ā' lev"ul), [key]
— Brit. Brit.
  1. a public examination requiring advanced knowledge in a subject and taken at the end of secondary school, usually two years after O level.
  2. a pass in this examination.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.