In this project, I examined fundraising and organizing efforts of parent teacher organizations (PTOs) at public schools in Washington, D.C. The map I've made, pictured here, shows a) locations of all the city's public schools (black symbols), b) the PTOs that are registered as tax-exempt organizations with the IRS (orange circles on top of their respective schools), and c) 2016 median household income for Washington, D.C. (the darker blue is higher income; the darker green is lower income). The size of the orange circles reflects the amount of PTO revenue for the 2014-15 school year. See my blog for an updated version of this map, which reflects data from the 2016-17 school year, along with some analysis of the issue.