> “People have raised questions for a long time about the rigor and the care in which Jo makes claims related to both her own research and others,” said Jon Star, a professor of math education at Harvard Graduate School of Education.<p>> But Star says many other education researchers have done exactly the same, and the “liberties” Boaler takes are common in the field. “That’s not to suggest that taking these liberties is okay,” Star said, “but she is being called out for it.”