wallets by approving invoices for supplies the schools never received. The alleged corruption started in 2002 and did not end until January 2015. For over 13 years, Shy billed DPS $5 million with $2.7 million feeding the corruption ring. The principals and administrator received kickbacks of more than $900,000. In 2016 the Michigan Legislature created the Detroit Public Schools Community District to replace the original Detroit Public Schools, which exists to repay debts. It had 45,000 students in 2017. The new district will have an elected board. Student achievement National Assessment of Education Progress (NAEP) In 2007, Education Week published study that claimed that Detroit Public School's graduation rate was 24.9%. Groups including state and local officials said that the study failed to take into account high school students who leave the district for charter schools, other school districts or who move out of the area. Detroit Public Schools claim that in 2005–2006 the graduation rate was 68 percent and expected it to hold constant in 2006–2007. On February 14, 2009, the Detroit Free Press reported that United States Secretary of Education Arne Duncan had concern over the quality of education Detroit children were receiving. A spokesman later stated that Duncan had no specific plans for Detroit. The students in Detroit's public schools perennially score at the bottom compared to other large urban school systems. Cass Technical High School, Renaissance High School, and Detroit School of Arts rank highly both statewide and nationally. However, at many schools some students still do not meet adequate yearly academic progress requirements. Students that fail to meet those requirements struggle in both language and mathematics. A team of DPS students from Western International High School and Murray-Wright High School took second place out of 552 teams from 25 countries in a robotics competition in Atlanta, Georgia. DPS students, most notably Bates Academy students, did well at the 42nd annual Academic Olympics in Eatonton, Georgia, winning many honors. The Duffield elementary and middle school chess teams both finished first in the 2007 statewide competition, and performed well in the national competition. At a previous Annual National Academic Games Olympics, DPS students won 25 individual and 20 team first place awards. Charter schools Detroit has a public charter school system with about 54,000 Detroit students (2009–10). When charter school and Detroit Public Schools enrollments are combined, the total number of children in public schools in Detroit