The purpose of a book review is to give a prospective reader a well-informed idea of what to expect of a book. A book review is also subjective given that it involves a personal critique and recommendation.
A book review is also a great classroom assignment. It allows you to not only show your teacher you understand the content of a particular book, but to also demonstrate that you understand how it relates to other texts that are common in society. Being able to associate a text with other content — especially content that's not necessarily covered by your teacher or instructor — can be a significant indicator as a positive trait for a learner.
Links that are helpful before you start writing your review:
Elements of a good book review: https://stevelaube.com/6-elements-of-a-good-book-review/
A simple guided to writing a book review: https://contentgrrl.wordpress.com/2007/10/29/book-review-tips-from-scholastic/
A book review generally breaks down into the following format.
The whole concept of a book review is to give the reader a thorough preview of what to expect by explaining your experience with the book/story. Assessment wise I find it’s a better assignment in comparison to a book report given that you have to compare it to other stories and to life in general.
Here are some notes based on some common questions I get in regards to the assignment in my classroom, along with notes on what I expect at particular grade levels.
I also suggest keeping a reading log if you've been assigned a book review. Look at the requirements of a book review and keeps notes accordingly. I generally offer my students a tabled document to keep track of the story. Understanding story arc and theme are keys to writing an effective book review.