Success can’t be measured by one or two numbers

“Whenever you make huge decisions about complex situations based on one or two numbers, you’re headed for disaster — especially when those numbers can be gamed.”

—Mark Palko and Andrew Gelman, “How schools that obsess about standardized tests ruin them as measures of success” on Vox

We’ve questioned Success Academy’s “success” on this blog before. These statisticians bring a new lens to that question.

I don’t want to denigrate the good work that Success Academy teachers and students are doing. There are practices and systems well worth replicating and investigating in these schools. But Eva Moskowitz’s political framing and marketing of her schools as the solution to poverty is problematic.