Dale Chall Readability
The Dale Chall readability formula is a readability test that provides a numeric gauge of the comprehension difficulty that readers come upon when reading a text. The mathematical formula uses the parameters of average sentence length and percentage of difficult words as inputs. A word is considered difficult if it does not appear in a revised standardized list of 3000 words that groups of fourth-grade American students could reliably understand.
The AutoCrit Dale Chall Readability report highlights words not found in the Dale Chall List of Simple Words.