 Instead, beginning in 2012, they take the Keystone Exams at the end of the associated course.In 2012, Central Mountain High School declined to School Improvement II AYP status when it failed to achieve a single one of the 8 academic targets.Pennsylvania System of School Assessments, commonly called PSSAs are No Child Left Behind Act related examinations which were administered from 2003 through 2012, in all Pennsylvania public high schools.