In Chicago, a student's chance of getting into the city's top, selective schools depends on where he or she lives.
Chicago Public Schools (CPS) places every part of the city into one of four socio-economic "tiers." On average, people from Tier 1 areas make less money and have less education, and people from Tier 4 areas make more money and have more education.
This tool helps you find what CPS tier you are in.
Download the raw data here.