The most common and most likely answer to this crossword clue is the 6 plus 5 letter word SECOND CLASS
I've seen this crossword clue in The Daily Telegraph
S
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More clues leading to the result SECOND CLASS
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The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SECOND CLASS mean?
SECOND CLASS adjective- Inferior in quality or standing.