Source: https://www.kidsbookseries.com/search?age=1&rl=3

Book series for 1-year-olds at reading level: 3rd grade (list current as of Dec 15, 2025)

  Curious George Board Books by H. A. Rey, Margret Rey (Age 1 - 5)
  Dr. Seuss Board Books by Dr. Seuss, Dr. Seuss (Age 0 - 5)

Please note that reading level search results reflect our best estimate of the reading level range for each series based on the information we have available. To check or confirm the actual reading level for a specific book, specific book within a series as measured by one of the companies that perform these assessments, please go to the respective company's website as explained here: https://www.kidsbookseries.com/help/readinglevels.php.

We are in the process of adding more series to our database. Please check back again soon when we may have more series on this list for you.

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Key for icons:
   = one or more books in the series has won an award
   = one or more books in the series has been on a best-seller list
   = one or more books in the series has been adapted into a film or musical
   = the series was adapted from a television series
   = the series has been adapted into a television series

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