There are a few major ways to learn how to critically read a children's book:
Children's Literature Award winners and honor books are one of the best places to find titles of high quality kid's books. There are many different kinds of awards that have appeared in the past 100 years, awarding various kinds of ethnicities, backgrounds, identities, communities as well as STEM subjects. Most award websites will show lists of past and current winners, so it's easy to find titles.
A second way to use award websites is to read the criteria that the jury use to select the winners and honor titles. By spending some time reading and understanding how the experts choose a winner, you also learn how to critically read and evaluate books by using their criteria in your own reading.
Another place to learn how to improve your reading and evaluating of kid's books is to go to online places where the author/illustrator or experts or people from that community are talking about kid's books that show representation from their community or identity. Their own perspective is important because you are getting a first hand account of why a book is "good" or "not recommended", and especially why.
Example of "not recommended" books featuring Native American characters here.
Once you feel comfortable reading kid's books with a critical eye, you'll look at kid's books with new eyes.
Each table has between 4-6 selected picture books, each from a different ethnicity or community of belonging. Please try and critically read as many as you can and think about the following:
If time permits, find another book using the library's search tool: