Agnes Grey by Anne Bronte

Agnes Grey is an 1847 novel written by English author Anne Brontë. The novel is about a governess of that name and is said to be based on Brontë's own experiences in the field. It was Brontë's first novel. Similar to her sister Charlotte's novel Jane Eyre, this is a novel that addresses what the precarious position of governess entailed and how it affected a young woman.
The Irish novelist George Moore praised Agnes Grey as "the most perfect prose narrative in English letters."