Thanks - I find the easiest way to get readability scores is with the toolbar for Microsoft Word. Users might not realize that the Review section has an option for Readability Statistics. After I write my piece, I check it with the Spelling & Grammar tool. Once I've changed or ignored all the grammar and spelling suggestions, a screen titled "Readability Statistics" presents the Feesch Reading Ease, Flesch-Kincaid Grade Level, and (of interest to all good writers) the Passive Sentence percentage.

Much easier than going to a separate website to run through my work.