In Pennsylvania, 120 public school districts and 56 charter schools agreed to participate. Pennsylvania was not approved for the grant. The failure of districts to agree to participate was cited as one reason that Pennsylvania was not approved. The Bangor Area School Board chose to not participate in the Pennsylvania Department of Education Common Cents program. The program called for the state to audit the district, at no cost to local taxpayers, to identify ways the district could save tax dollars. After the review of the information, the district was not required to implement the recommended cost savings changes. The school board set property tax rates in 2010–2011 at 48.7200 mills. A mill is $1 of tax for every $1,000 of a property's assessed value. Irregular property reassessments have become a serious issue in the commonwealth as it creates a significant disparity in taxation within a community and across a region. Pennsylvania school district revenues are dominated by two main sources: 1) Property tax collections, which account for the vast majority (between 75–85%) of local revenues; and 2) Act 511 tax collections (Local Tax Enabling Act), which are around 15% of revenues for school districts. The Act 1 of 2006 Index regulates the rates at which each school district can raise property taxes in Pennsylvania. Districts are not authorized to raise taxes above that index unless they allow voters to vote by referendum, or they seek an exception from the state Department of Education. The base index for the 2011–2012 school year is 1.4 percent, but the Act 1 Index can be adjusted higher, depending on a number of factors, such as property values and the personal income of district residents. Act 1 included 10 exceptions, including: increasing pension costs, increases in special education costs, a catastrophe like a fire or flood, increase in health insurance costs for contracts in effect in 2006 or dwindling tax bases. The base index is the average of the percentage increase in the statewide average weekly wage, as determined by the PA Department of Labor and Industry, for the preceding calendar year and the percentage increase in the Employment Cost Index for Elementary and Secondary Schools, as determined by the Bureau of Labor Statistics in the U.S. Department of Labor, for the previous 12-month period ending June 30. For a school district with a market value/personal income aid ratio (MV/PI AR) greater than 0.4000, its index equals the base index multiplied by the sum of 0.75 and its MV/PI AR for the current year. The School District Adjusted Index for the Bangor Area School District 2006–2007 through 2010–2011.