Grading Teachers, With Data From Class

Farhad Manjoo:

Halfway through the last school year, Leila Campbell, a young humanities teacher at a charter high school in Oakland, Calif., received the results from a recent survey of her students.

On most measures, Ms. Campbell and her fellow teachers at the Aspire Lionel Wilson Preparatory Academy were scoring at or above the average for Aspire, a charter system that runs more than a dozen schools in California and Tennessee.