This study confirms an earlier 2012 California study that struggling students aren’t mastering algebra by repeating it. That study looked at only ninth graders across 24 school districts in California ...

A new study finds that Chicago's algebra-for-all policy took a toll on high-achieving students, and that the main reason was a shift to mixed-ability grouping of students.

They tend to improve slightly, but not as much might be hoped. This study confirms an earlier 2012 California study that struggling students aren’t mastering algebra by repeating it.

Books Received Published: 17 August 1911 Diophantus of Alexandria: a Study in the History of Greek Algebra G. B. M. Nature 87, 208 (1911) Cite this article ...