Please read this article from 1962 carefully:
"Then came the case of New Rochelle, N.Y. - a Northern community startled to find itself forced to desegregate under federal court order. Judge Irving R. Kaufman found New Rochelle guilty of deliberate gerrymandering to keep a 94%-Negro school Negro. As a result. New Rochelle was compelled under the 14th Amendment to allow the Negroes free access to white schools. More than half the Negroes transferred, leaving their old school near-defunct."