4-Year Cohort Graduation Rates

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.

4-Year Cohort Graduation Rates represent the percentage of students who graduate from high school 3 years after their 9th grade year.

A cohort refers to a group of students who together entered high school (defined by 9th Grade) for the first time during the same school year.

The 4-year cohort graduation rates shown in the following graph are based on the percentage of students who entered 9th Grade four years ago that have graduated by the end of the four years:

Note: The year listed is the second half of the school year; for example, 2015 refers to the 2014-2015 school year. The 4-year cohort graduation rate shown for 2015 is based on the cohort of 9th grade students from the 2011-2012 school year.