Definition of S level in English:

S level

noun

  • (in the UK except Scotland) an examination formerly taken together with an A level in the same subject, but having a more advanced syllabus.

    • ‘To add to my bewilderment a handful of students were jettisoned at the end of the first year for failing retakes, many of whom had S levels to their name.’
    • ‘At the time, because I wanted to go to Oxford, I had to sit an "S-level" as well.’
    • ‘To achieve the A - grade students would have to answer the type of questions at present in the Advanced Extension Awards, which replaced S level.’
    • ‘They managed the Additional Maths well enough, found the 'A' level paper very difficult indeed, and the 'S' level was utterly beyond them.’

Origin

Abbreviation of Special level or (formerly) Scholarship level.