Explanation:
When every pencil meant a sacrifice his parents boarded him at school in town, slaving to free him from the stony fields, the meagre acreage that bore them down. His parents are "slaving to free him" - ie. sacrificing their own lives, their own freedom for his sake. To free him from the town.
What book?? next time u should include the book & more info . that’s prob why no ones answering .
Because that’s how the story was made the details will help you with the questions asked