I was a former teacher in the Wake Co. school system, so I may be able to offer some insight. There is information on ncreportcards.org and on the local school website http://www.wcpss.net
that can give you an idea of scores, attendance areas, etc. Another great resource is http://www.greatschools.net...and
you can also participate in conversation threads at http://www.city-data.com,
I think. A lot of it depends on the needs of your family and whether you child(ren) would function best in a magnet school, traditional calendar school, or perhaps year round. Test scores don't tell the whole story, so it would be helpful to go to the schools of interest and perhaps do a tour w/ one of the staff members...this gives you an idea of what is important to them and whether it fits your little ones' personalities. With reassignment, there's a chance that if a school had a high score in testing one year, it could be different the next depending on the students who are reassigned to that school, so just using scores to determine what's best isn't always indicative of a great school. You'll want to know how involved the PTA is, ask about fundraisers and parent support, do people volunteer there regularly, etc.
I actually advise clients not to base their housing choice on a certain school attendance area because as this area continues to grow, reassignment could become a factor. Wake Co. just had the largest reassignment of students ever to balance out the populations in the schools and the school I last taught at a few years ago had 3 reassignments in the 5 years I was there...but depending on the area where you live, there's a chance if you're closeby that you'd probably remain in the core attendance area ITB...but there are no guarantees. Wake Co. has stringent expectations for its students, but it really all boils down to the teacher and how your child's learning preferences come into play.
Hope that helps...have a great weekend. Feel free to contact me with any questions. :) Wendy