Effective with the 2009-10 school year, the Pennsylvania Department of Education (PDE) began implementation of a new methodology to calculate the graduation rate for all public high schools, comprehensive Career and Technical Centers (CTCs) and charter schools that graduate students from 12th grade.
The transition to the new method of calculating the graduation rate is required by the U.S. Department of Education, and is a more precise way to measure the true graduation rate.
PA Department of Education
Information for 2010 is preliminary. The final 2010 4-Year Cohort Graduation Rates will be included on 2011 district and school report cards, but will not be used to determine Adequate Yearly Progress (AYP) until 2012.
In cases of "LNE" (low number event) the cohort size is less than 10 and therefore not publicly reported.
The year listed is the second half of the school year; for example, 2010 refers to the 2009-2010 school year.