Wiktionary
as-level
n. '''Advanced Subsidiary level''', in the UK: the exam taken in the first year of the sixth form, as a first stage in getting to the A-levels (A2) at the end of the sixth form. The modular format makes the distinction less clear.
Wikipedia
AS-level
AS-level is an abbreviation that can stand for:
- Advanced Subsidiary level, the first part of the current A Level qualification
- Advanced Supplementary level, an old qualification which was part of the UK Advanced level system prior to 2000
- A Hong Kong Advanced Supplementary Level Examination