Those revisions are reflected in the Bureau's 2009–10 reports. In FY 2009–2010, the District received 6.7% of its total revenues for elementary and secondary education from federal sources. In 2008, in terms of testing 36% of students demonstrated proficiency in mathematics and 39% demonstrated proficiency in reading. The average educator was paid $67,000 in 2010. A contract signed in 2010 was expected to raise that figure to $81,000 in 2012. All DCPS schools are located in Washington, D.C.. Many of the District's public schools are undergoing evolving relationships with the central office as they seek to compete for students leaving the system for charter schools. According to school choice researcher Erin Dillon, "In its winning application for federal Race to the Top funds, DCPS, for example, touted its three models for autonomous schools: The aptly named 'Autonomous Schools,' which are granted autonomy as a reward for high performance; 'Partnership Schools,' which are run by outside organizations that are granted autonomy in the hope of dramatically improving performance; and the 'D.C. Collaborative for Change,' or DC3, a joint effort of some of the District’s highest- and lowest-performing schools that have been granted autonomy as a tool for innovating with curriculum and professional development. (Meanwhile, highly autonomous charter schools, a growing presence in the District of Columbia, educate almost 40 percent of the city’s public school students.)" Below is a partial list of superintendents and chancellors of the D.C. Public School system. The head of the school system was known as "Superintendent" until 2007. After June 2007, it was known as "Chancellor". In 2018, it was revealed by WAMU and NPR that progress achieved by the school district in relation to graduation rates the year prior had been inflated by high schools who granted diplomas to students who should have failed according to city law. According to "The Washington Post", only 46 percent of the school district's public school students were on track to graduate in 2018 after the school system began to adhere to stricter attendance policies.