A look at Alpha School, a network of private schools that claims to teach kids 2x as fast using AI; data shows ~50% of K-8 students missed this goal in math (Dana Goldstein/New York Times)

Dana Goldstein / New York Times: A look at Alpha School, a network of private schools that claims to teach kids 2x as fast using AI; data shows ~50% of K-8 students missed this goal in math  —  Alpha School, a private network, is spreading into public education.  While its students' test scores are high, some parents and educators say it doesn't live up to the hype.