Panel for Educational Policy", which together with the Chancellor and other school employees was designated as the "Department of Education of the City of New York". The education headquarters were moved from 110 Livingston Street in downtown Brooklyn to the Tweed Courthouse building adjacent to New York City Hall in Manhattan. In 2003, the districts were grouped into ten regions, each encompassing several elementary and middle school districts, and part of a high school district. In 2005, several schools joined the Autonomous Zone (later Empowerment Zone) and were allowed to use part of their budgets to directly purchase support services. These schools were released from their regions. In 2007, Mayor Michael Bloomberg and Chancellor Joel I. Klein announced the dissolution of the regions effective June 2007, and schools became organized into one of several School Support Organizations. Due to an ongoing power struggle between the Democratic and Republican parties, state senators failed to renew mayoral control of the city's school system by 12:00 a.m. EDT on July 1, 2009, immediately ceding control back to the pre-2002 Board of Education system. Mayor Bloomberg announced summer school sessions would be held without interruption while city attorneys oversaw the transition of power. On August 6, 2009, the state senate ratified the bill returning control of the schools back to the mayor for another six years with few changes from the 2002-2009 mayoral control structure. Since 2009, the NYS Assembly has passed incremental laws keeping NYC Mayoral control over the DOE and the current law is set to expire with the end of Mayor DeBlasio's term in 2022. Management Territory NYCDOE is the school district of all five boroughs. All of the city is assigned to schools in the NYCDOE school district except for a small section of the Bronx, which is instead assigned to the Pelham Public Schools (with tuition supported by the city government). Curriculum Beginning in 2003, New York City public schools citywide implemented a mathematics "core curriculum" based on New York State standards for grades K-Up Higher. To graduate high school, students must earn at least six credits in mathematics. In order to receive a Regents diploma, students must score at least 65 on a Regents math exam. Health and nutrition The city has started several initiatives to reduce childhood obesity among students, including promoting exercise and improving nutrition in school cafeterias. During Mayor Bloomberg's first term, white bread was