The answer might be shocked dialog
It's useful because it gets you ahead in class. If you read ahead you are more likely to understand what your professor is teaching. It also helps if you unexpectedly get a large amount of homework. If you have read ahead it allows you to have more time doing labs or essays.
The Boy in the Striped Pajamas" is a historical fiction book about a family that has to move away from Berlin to a house near a concentration camp, where Bruno's father works. Bruno, the nine-year-old boy of the family, notices a "farm" outside his window. This farm is actually the concentration camp, Auschwitz. Bruno eventually befriends Shmuel, who is a Jew in the concentration camp.