We don’t have to learn what “regular” geometry looks like, we just know. And we’ve long thought that this intuitive geometry — our sense for straight lines, right angles, ...

Months after officials at Deerfield Public Schools District 109 eliminated a middle-school math class, some parents are growing concerned the change is leaving their students behind. Parents aired … ...

In geometry, at least, honors classes tended to be more challenging than regular classes: A third of honors geometry classes were rigorous, compared with 19 percent of regular geometry classes.