But for your piece of mind and to learn more or less what others parents think too please check http://www.greatschools.org/. It is a great comparison website that ranks and offer information on most public and private schools with parents reviews.
If you have further questions please do not hesitate and contact me.
As I said before - if stats and numbers are looked at then the schools compare favorably. Clearly there's more to stats though so you should put boots on the ground and visit them to ensure they're a good fit for your kids.
You can find nice homes for a reasonable price in Roswell west of 400, just be careful with any stucco, LP/GP siding and polybutelyne piped homes - all known material defects.
If travel to and from East Cobb is important, I would recommend staying on the west side of Hwy. 400. Roswell is the most convenient as part of it is even in Cobb County. Staying south of Hw. 92 will also reduce your traffic concerns.
However, it depends on how much you want to spend and what type of house you are looking for. The newer you go, the more expensive and the further out you go, the more house you get for your money.
I would recommend looking at a wide range to start, and you'll find you can narrow down your search pretty quickly, once you get inside some properties.
Happy to help however I can, my contact info below:
Katherine L. Morrison, Realtor
Team Realty Group
If you need any assistance in your relocation, feel free to contact me.
Fred Yancy, Broker