NP here. Based on my DC's experience this past fall, I would say there are different approaches. Our DC tried a draft of a common app essay that sounded unique in theory, but fell flat -- and everyone (including DC) saw that. Dc then switched and wrote about an unusual experience between junior/senior year (summer). It came out great -- not because of the uniqueness of the setting (although it was interesting) - but because of the common, down to earth observations DC made about himself and others who shared this experience, how it effected them all, and it personally transformed our DC. A great college essay as far as I can tell reveals a good deal about the student - it shows it more than it tells it -- and, of course, it should be well written. DC's supplemental essays were about a very normal topic everyone can relate too. But again, it was written in a way to reveal who he is as a person, a student, a friend, etc. Let a school counselor or a favorite teacher read a draft, let a parent read it too if the student is willing, and just give broad general feedback as to how you think a college admissions officer would react to it (or catch an obvious typo), You don't need a coach -- just be sure your child knows to be authentic, honest, thoughtful and proof read carefully. I think it helps if the essay fits in well with the rest of the application and doesn't seem out of the blue.