There is a website put out by the city of Charlotte that has a lot of information. Included in that information is the schools assigned to a particular address. Granted district lines do change as population shifts to avoid over populating one school and under populating other schools. But to get the current year assigned school this is the best resource out there.
The website is http://maps.co.mecklenburg.nc.us/geoportal/, Just put in the street address and it will tell you all the schools assigned to it.
Coldwell Banker United