70 years ago, many believed school integration could happen. It hasn’t

Seventy years ago this week, the U.S. Supreme Court ruled separating children in schools by race was unconstitutional. On paper, that decision—the fabled Brown v. Board of Education, taught in most every U.S. classroom—still stands.

But for decades, U.S. schools have been re-segregating. The country is more diverse than it ever has been, with students more exposed to classmates from different backgrounds. Still, around four out of 10 Black and Hispanic students attend schools where almost every one of their classmates is another student of color.