Does the Fourteenth Amendment condone de facto racial segregation in public schools?

To date the United States Supreme Court has not, as I read its decisions, held that the Fourteenth Amendment condones de facto racial segregation in public schools. Keyes v. School District No. 1, 413 U.S. 189, 93 S.Ct. 2686, 37 L.Ed.2d 548, expressly reserved decision on the issue, stating: 'We have no occasion to consider in this case whether a 'neighborhood policy' of itself will justify racial or ethnic concentrations in the absence of a finding that school authorities have committed acts constituting de jure segregation.' (413 U.S. 189, 212, 93 S.Ct. 2686, 2699, 37 L.Ed.2d 548.)