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List 32: Complexity scheme identifier

Last updated in issue 47
Value Description Notes Issue number Modified in Issue
01 Lexile code For example AD or HL. DEPRECATED in ONIX 3 – use code 06 instead 0 24
02 Lexile number For example 880L. DEPRECATED in ONIX 3 – use code 06 instead 0 24
03 Fry Readability score Fry readability metric based on number of sentences and syllables per 100 words. Expressed as an integer from 1 to 15 in <ComplexityCode> 14
04 IoE Book Band UK Institute of Education Book Bands for Guided Reading scheme (see <ComplexityCode> is a color, eg ‘Pink A’ or ‘Copper’ 23
05 Fountas & Pinnell Text Level Gradient <ComplexityCode> is a code from ‘A’ to Z+’. See 23 30
06 Lexile measure The Lexile measure in <ComplexityCode> combines the Lexile number (for example 620L or 880L) and optionally the Lexile code (for example AD or HL). Examples might be ‘880L’, ‘AD0L’ or ‘HL600L’. See 24
07 ATOS for Books Advantage-TASA Open Standard book readability score, used for example within the Renaissance Learning Accelerated Reader scheme. <ComplexityCode> is the ‘Book Level’, a real number between 0 and 17. See 25 47
08 Flesch-Kincaid Grade Level Flesch-Kincaid Grade Level Formula, a standard readability measure based on the weighted number of syllables per word and words per sentence. <ComplexityCode> is a real number typically between about -1 and 20 26
09 Guided Reading Level Use this code for books levelled by the publisher or a third party using the Fountas and Pinnell Guided Reading methodology 30
10 Reading Recovery Level Used for books aimed at K-2 literacy intervention. <ComplexityCode> is an integer between 1 and 20 30
11 LIX Swedish ‘läsbarhetsindex’ readability index used in Scandinavia. For use in ONIX 3.0 only 55
12 Lexile Audio measure Lexile Audio measure from MetaMetrics’ Framework for Listening. The code in <ComplexityCode> indicates the difficulty of comprehension of audio material (for example 600L or 1030L). For use in ONIX 3.0 only. See 56
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