PITTSBURGH — Pennsylvania’s fourth and eighth graders are doing slightly better than the national average in math and reading, according to a new report.

But the scores haven’t changed much over the last few years, and in some cases have declined slightly, according to the 2013 Nation’s Report Card.

The majority of the students still are not demonstrating solid academic performance in either subject. Just 44 percent of Pennsylvania fourth graders and 42 percent of eighth graders scored at or above the proficient level in math. In reading, 40 percent of fourth graders and 42 percent of eighth graders hit that mark.

The results come from the National Assessment of Educational Progress, or NAEP, which is given every two years to a sample of fourth and eighth graders.