The Keystone Exams are standardized tests in the state of Pennsylvania designed to assess high school students' proficiency in core subjects. These subjects include Algebra I, Literature, and Biology. The exams are part of the state's educational assessment system and are intended to ensure that students meet specific academic standards before graduating. Students typically take the Keystone Exams at the end of relevant courses. The results help schools evaluate their educational programs and provide insights into student learning. Passing the exams is often a requirement for graduation, making them an important milestone in a student's academic journey.