Atos is parentfriendlysince it uses a grade level scale easily understood by parents. Atos book levels are assigned using the atos readability formula. For finding independent reading levels, i used atos and lexile interchangeably because lists of atos levels are much harder to find. Metametrics predicts and assesses how difficult a text will be for a reader to comprehend.
Located near the top of our book search tool, you can quickly find a book s lexile measure by entering a book s title, author or isbn. A book or magazine at a 500l has a lexile level of 500. Did you know you can search our catalog by grade, interest level, or book level. Lexile measurements are from metametrics atos levels are from renaissance learning all reading levels are based on the actual difficulty of the works, grammar, and sentence structure used in a book. Lexile reading level chart by grade scholastic parents. Atos conversion chart atos scale to reading recovery. If you want to know whether a specific book is within your childs lexile range, you can use our lexile find a book tool. The lexile measures, which are based on word frequency and sentence length, are reported by metametrics. On a subnote, the atos level and lexile level are technically different measures. Accelerated reader, myon reader, star reading, and ar bookfinder display book level data in either atos or lexile measures, based on the preference of. This table was not produced from any empirical studies of alignment across reading level systems. Some titles in your librarys digital collection may have standardized reading levels, including interest level, atos level, lexile measure, andor. A texts lexile framework works in increments of 10 with 10l being the lowest. Rows in this chart do not represent a direct correlation.
The two main criteria it tests are word frequency and sentence strength. Level guided reading dra lexile atos k a to b 1 to 2 br199 to. See this chart for the correlation between atos levels and grade levels. Again they equate to us grade so in the uk we need to add 1 to get the equivalent year group. For example, five little kittensgeller, 1999 is a 32page picture book that the publisher labels appropriate for grades k3, ages 58. For more information, including the correlation between lexile measures and grade. Grade level lexile rating ar level dra level fountas pinnell guided reading 6 900 6 44 w v 6. This correlation chart illustrates how learning az levels approximately correlate to other leveling systems commonly found in leveled reading materials. What are the standardized reading levels that i see on my library site. Atos conversion chart atos scale to guided reading scale. Atos works especially well for emergentreader books while other formulas overstate the difficulty. Metametrics using atos book levels and are not certified lexile measures. This book has a lexile level of 970 which equates to grades 67.