The Cornell School Board set property tax rates in 2011-12 at 25.9550 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. Real Estate taxes are the main source of revenue for the district. It is collected by local tax collectors. On the local level, Pennsylvania 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.