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. Property taxes, in the Commonwealth of Pennsylvania, apply only to real estate - land and buildings. The property tax is not levied on cars, business inventory, or other personal property. Certain types of property are exempt from property taxes, including: places of worship, places of burial, private social clubs, charitable and educational institutions and government property. Additionally, service related, disabled US military veterans may seek an exemption from paying property taxes. 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, which are around 15% of revenues for school districts. When a Pennsylvania public school district includes municipalities in two counties, as North Pocono School District does (Lackawanna County and Wayne County) each of which has different rates of property tax assessment, a state board equalizes the tax rates between the counties. In 2010, miscalculations by the State Tax Equalization Board (STEB) were widespread in the Commonwealth and adversely impacted funding for many school districts, including those that did not cross county borders. The average yearly property tax paid by Lackawanna County residents amounts to about 3.4% of their yearly income. Lackawanna County ranked 412th of the 3143 United States counties for property taxes as a percentage of median income. For Wayne County residents, the average property taxes are 3.78% of residents income ranking 287th among United States counties. According to a report prepared by the Pennsylvania Department of Education, the total real estate taxes collected by all school districts in Pennsylvania rose from $6,474,133,936 in 1999-00 to $10,438,463,356 in 2008-09 and to $11,153,412,490 in 2011. Property taxes in Pennsylvania are relatively high on a national scale. According to the Tax Foundation, Pennsylvania ranked 11th in the U.S. in 2008 in terms of property taxes paid as a percentage of home value (1.34%) and 12th in the country in terms of property taxes as a percentage of income (3.55%). The Act 1 of 2006 Index regulates the rates at which each school district can raise property taxes in Pennsylvania. Districts are not permitted to raise property taxes above their annual Index unless they either: allow voters to vote by referendum or they receive an exception from the Pennsylvania Department of Education.