Boston is a different city today than in 1974, when working-class whites rebelled against a federal judge’s order to desegregate schools via forced bus travel. Tribalism has been leveled by prosperity. In 2021, after decades of Irish and Italian mayors, voters put 36-year-old Michelle Wu in City Hall. The school system is now steaming with fervor for social justice. But one thing has not changed: Boston is still doing a poor job of educating children, especially the majority who are Hispanic and black.