Math, reading performance is stagnant among U.S. 12th-graders, assessment finds

The Washington Post reports:

The nation’s high school seniors have shown no improvement in math and reading performance since 2009, and large racial achievement gaps persist, according to the results of a test administered by the federal government last year.

The results, to be released Wednesday at Dunbar High School in Northwest Washington, detail students’ performance on the National Assessment of Educational Progress, or NAEP. Also called the Nation’s Report Card, NAEP is widely regarded as the most consistent measure of U.S. students’ achievement over time. Since the 1990s, it has been administered every four years to high school students and every two years to students in grades four and eight.

Yet, some people call public education an "investment".