Here’s a general guide to the rating system, on a five pawprint scale:
Five pawprints: A must-have for the library, can’t say enough good about it.
Four pawprints: Good, not absolutely stunning, but a good read nonetheless.
Three pawprints: Okay, could use some improvement.
Two pawprints: Eh. If you see it used, you might want to pick it up if you really want to.
One pawprint: Don’t bother. There are probably little to no redeeming qualities to this book.
There are also half-pawprints (don’t ask me about the biological specifics of those!). They are, of course, halfway in between. And do be aware that the above system is general; details may vary.
Other reviewers may use symbols other than pawprints, but the guidelines are the same.