The percentage of high school students who have successfully passed the H.S.A. exams out of all high school students that took the exam in the school year (considering only the highest score per subject area). In Maryland, all students who entered 9th grade in or after 2005 are required to take and pass the High School Assessments (H.S.A.) in order to graduate, including students in special education, English language learners (ELLs), and students with 504 plans. There are currently three H.S.A. exams: English, Algebra/Data Analysis; and Biology (a H.S.A. in Government has since been discontinued). Students can retake the HSAs as many times as necessary to pass. Source: Baltimore City Public Schools Years Available: 2009-2010, 2010-2011, 2011-2012, 2012-2013, 2013-2014