The most common and most likely answer to this crossword clue is the 9 letter word GOVERNESS
I've seen this crossword clue in The Times
G
O
V
E
R
N
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S
S
More clues leading to the result GOVERNESS
- Eg Miss Prism’s turn for home in Scottish city
- Beginning to grumble about head teacher
- Teacher beginning to grumble about head
- Leave Jules’s special teacher at home
- Travel with author’s son and private teacher
- Idle chat about author to lady teacher
- Study missing one old head teacher
- End of testing finished head teacher
- Song verse transposed into A minor’s source of educational material?
Buddy explains!

The straight part
We know that "Eg Miss Prism" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case eg miss prism = governess.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 GOVERNESS mean?
GOVERNESS noun- A woman paid to educate children in their own home.
- A female governor.
- To work as governess; to educate children in their own home.