I have never let my schooling interfere with my education.
Best known for 'The Adventures of Tom Sawyer' and 'The Adventures of Huckleberry Finn', Mark Twain (or Samuel Langhorne Clemens as he was born) was the author of 28 books, numerous short stories, letters and sketches.
A useful way into American history as well as being great adventure stories, these two books are very different in tone. Tom Sawyer is about childhood as Twain remembers it with many of its characters based on people he knew; Huckleberry Finn considers racism, slavery and xenophobia, making it altogether a different book to tackle in school.
Not often looked at in primary schools, these books would offer an interesting way of challenging more able readers as the unfamiliar setting- both historical and cultural- would raise many points for discussion and further exploration.