This puzzle is a 15x15 crossword puzzle themed around Harper Lee's To Kill a Mockingbird. 17 of the clues (written in bold-faced letters) have something to do with the novel. This IS an aberration for me as most of my crosswords only have 8 or 9 themed clues. If you would prefer even more themed clues I do have another puzzle on To Kill a Mockingbird with 20 themed clues that I refer to as my fake-crossword as it does not follow all the rules of regular crossword making. This crossword IS a little more difficult than the other. Older high school students may well make it through individually but it might be beneficial to have the younger students team up in small groups and work together on it.