white flightˌwhite ˈflight noun [uncountable] 
the situation in which white people move away from an area or send their children to private schools to avoid being around people who are not white: 
Waves of immigration into the inner-London boroughs prompted white flight into the suburbs.
the situation in which white people move away from an area or send their children to private schools to avoid being around people who are not white: Waves of immigration into the inner-London boroughs prompted white flight into the suburbs.