Each state and jurisdiction that participated in the National Assessment of Educational Progress (NAEP) 2013 Grade 12 Reading and Mathematics State Pilot assessment receives a one-page snapshot report that presents key findings and trends in a condensed format. This report presents the results for Massachusetts' 2013 student achievement in mathematics. In 2013, the average score of twelfth-grade students in Massachusetts was 161. This was higher than the average score of 152 for public school students in the nation. The average score for students in Massachusetts in 2013 (161) was not significantly different from their average score in 2009 (163). The score gap between higher performing students in Massachusetts (those at the 75th percentile) and lower performing students (those at the 25th percentile) was 45 points in 2013. This performance gap was not significantly different from that in 2009 (45 points). The percentage of students in Massachusetts who performed at or above the NAEP "Proficient" level was 34 percent in 2013. This percentage was not significantly different from that in 2009 (36 percent). The percentage of students in Massachusetts who performed at or above the NAEP "Basic" level was 73 percent in 2013. This percentage was not significantly different from that in 2009 (75 percent). [Access the complete 2013 results from the twelfth-grade pilot program in reading and mathematics via the online Nation's Report Card: http://nationsreportcard.gov/reading_math_g12_2013/#/student-progress.]