I grew up in Greenfield which neighbors Hales Corners. I had tons of friends who lived in Hales Corners and I went to the schools in the Hales Corners district. It is an absolutely incredible place to live. Very hard to get into it though! People rarely leave once they are in!
I went to Hales Corners Elementary School, Whitnall Middle School, and then Whitnall High School. They are the only option for public school in the district and they are fantastic. Great schools and great teachers. The most popular private schools are Hales Corners Lutheran Church and School, and St. Mary's Catholic Church and School. We belong to H.C. Lutheran and love it.
Aside from the schools, the area itself is great. There is a big park with a swimming and wading pool in the middle of the village where they have a huge 4th of July festival, parade and fireworks every year. Everything you need for shopping and restaurants is right on the main highway, and they are completely up to date. It is a very friendly community and I think you would have a great life there.