 In Biology I, 65.6% of pupils demonstrated on grade level science understanding at the end of the Biology course.The requirement that pupils pass the Keystone Exams in reading, algebra I and bIology I in order to graduate was postponed until 2019 by the Pennsylvania General Assembly because less than 60% of 12 grade pupils statewide would have been eligible for graduation from high school due to failing one or more Keystone Exams.Fifty-four percent of the 2,676 public schools in Pennsylvania achieved a passing score of 70 or better.