ホワイト・フライト
After Brown v. Board of Education, many white families took advantage of the growing highway system and suburbanization to leave cities to avoid integrated schools, which became known as White flight. White flight was facilitated by FHA policies such as race-restricted deeds and zoning, as well as by blockbusting. This led to what is known as urban decay, and the achievement gap between inner-city and suburban schools widened.