Adapted from VOYA’s Review Codes.
★★★★★ = Absolutely excellent, couldn’t be better.
★★★★☆ = The writing is very good, but not quite perfect.
★★★☆☆ = Readable, with no major issues.
★★☆☆☆ = Maybe someone else should have edited this, too.
★☆☆☆☆ = Major, serious issues that detract from the ability to understand the book.
♥♥♥♥♥ = Be prepared to be on the holds list for a long time.
♥♥♥♥♡ = This is a buzzy book, the sort of thing people read just to see what all the fuss was about.
♥♥♥♡♡ = Some people will want this, others might take some convincing.
♥♥♡♡♡ = Every book has its reader, but not every reader is right for this book.
♥♡♡♡♡ = Highly technical, specific, and only for people who are very interested in the subject matter.