Common Core Misses Target of Easy State Comparison

Comparing student achievement data across states remains impossible, even though it was a fundamental goal of the Common Core initiative. Because state legislators continue to adopt or abandon testing platforms, there remains no way to equally measure the math and language proficiencies of students across the country. This year, only two tests measured students against a Common Core rubric, and many states are abandoning the shared diagnostics in favor of a return to independent statewide testing. (The Associated Press)