Pennsylvania System of School Assessments, commonly called PSSAs are No Child Left Behind Act related examinations which were administered from 2003 through 2012. The exams were administered in the Spring of each school year. In 2013, the Commonwealth of Pennsylvania changed its high school assessments to the Keystone Exams in Algebra 1, Reading/literature and Biology1. The exams are given at the end of the course, rather than all in the spring of the student's 11th grade year. In 2013, the Commonwealth of Pennsylvania changed its high school assessments to the Keystone Exams in Algebra 1, Reading/literature and Biology1. The exams are given at the end of the applicable course, rather than all in the spring of the student's 11th grade year. The state announced the change in 2010 and made it in order to comply with Governor Edward G. Rendell's agreement to change to the national Common Core standards.