Graduation Rates: The report mentions that high school graduation rates are at their highest level ever, with 81 percent of the class of 2013 receiving their diploma within four years. Proficiency Rates on NAEP Exams: The report discusses proficiency rates on the 2015 NAEP reading test, where only 21 percent of low-income fourth-grade students achieved proficiency compared to 52 percent of nonpoor students. Gains in Proficiency Rates: The report highlights gains in proficiency rates in certain states and districts over the years. For example, in Massachusetts, the percentage of fourth-graders scoring proficient or above in math increased from 41 percent in 2003 to 54 percent in 2013