Quartile is a 8 letter English word. It's valid Scrabble word worth 17 points. It's valid Words with friends word worth 19 points.
You can make 262 anagrams from letters in quartile (aeilqrtu).
1500-10; Medieval Latin quartīlis, equivalent to Latin quart(us) fourth + -īlis -ile
Of course, that's just an illustration; people don't mechanically drop down a quartile by getting more education.
First quartile--Fairly clear; illumination of actual scene is fairly represented.
A 3rd quartile candidate with "some college"earning $1085 a week becomes a second-quartile BA holder earning . . . $1066.