For individual schools in each district , a valuable resource is http://greatschools.net.
As a parent & a realtor , the most helpful advice I can provide is to look at aspects of the school that would apply to your child's needs.
Resale value of homes is usually tied to successful school districts, but as a buyer one should also balance the factors of highest SAT scores & property taxes, if your child is entering elementary school.
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Hope that helps!