The percentage of students passing M.S.A. exams in reading and mathematics in 3rd, 5th, and 8th grades. Maryland School Assessment (MSA) scores measure the number of students scoring in one of three classifications out of all students enrolled in that grade. Students can either be rated as advanced, proficient, or having basic knowledge of a subject. This indicator includes only those students who have tested as advanced or proficient. Source: Baltimore City Public Schools Years Available: 2009-2010, 2010-2011, 2011-2012, 2012-2013, 2013-2014