Chicago

[Synnia]

http://publicschoolindex.com

One number. All information. Public School Index is a single numeric number between 0-100 assigned to a location to indicate the quality of nearby public schools. It helps parents or home buyers quickly find the quality of schools in an area, before they delve into details of each individual school. 

[nathanfreeborn]

Great Schools is another great resource for getting infromation on nearby schools: http://www.greatschools.org/

The iPhone app is also very handy.