I'm not an expert on all things Worthington, but Worthington Hills is a very nice area. It's very upscale and should have a very good resale value when you move back across The Pond some day.
I'm pretty sure there is no requirement to become a member of Worthington Hills Country Club, just because you purchased a home in the Worthington Hills subdivision. I'm sure the elementary school they have within the subdivision is very good.
However, if you're a golfer, I'd recommend joining. I hear the course is very nice, although they probably wouldn't let riff raff like me on it.
