the air quality index. Americans rely on the AQI to know how dirty the air is, but they will be stuck with an outdated yardstick that understates the health risks. The U.S. EPA plans to reject ...

There are many reasons to be wary about relying too heavily on the School District of Philadelphia’s main tool for measuring school quality – especially when it comes to making high-stakes decisions ...

Things that didn't make a difference in the average doctor's quality: Years in practice ... of 5.9 percentage points on the RAND quality yardstick. Now, that's not nothing. But it's not all ...