In Word click on Tools/click on Options/select the Grammar and Spelling tab/click the Show readability statistics box. Go back and run a spelling and grammar check.

The Flesch Reading Ease is on a scale of 0-100. The higher the score the more readable it is. Minimum scores of about 60 or 70 are desirable. The Flesch-Kinkaid Grade Level is the minimum grade lavel required to have any hope of making sense out of the text and represents number of years of formal education attained. This thang scored a Flesch Reading Ease of 9.1 and a Flesch-Kinkaid Grade Level of 12.0.