The number of poor students enrolled in a particular school or living in a certain school district is one of the most important education data points that exists, and it's getting harder to accurately track that number.

The number of poor students enrolled in a particular school or living in a certain school district is one of the most important education data points that exists, and it's getting harder to accurately track that number. https://t.co/XRUdOLsN6g

— U.S. News (@usnews) January 8, 2019