Moodle 2.5+ text filter plugin that calculates readability from a choice of 6 popular formulas:
-
Flesch-Kincaid Reading Ease - https://en.wikipedia.org/wiki/Flesch%E2%80%93Kincaid_readability_tests
-
Flesch-Kincaid Grade Level
-
Gunning-Fog Index - https://en.wikipedia.org/wiki/Gunning_fog_index
-
Coleman-Liau Index - https://en.wikipedia.org/wiki/Coleman-Liau_Index
-
SMOG Index - https://en.wikipedia.org/wiki/SMOG
-
Automated Readability Index - https://en.wikipedia.org/wiki/Automated_Readability_Index
Minimum length of texts to be analysed can be set.
Uses Text-Statistics script by Dave Child: https://github.com/DaveChild/Text-Statistics