Thanks to the interventions of Quakers and the Freedmen’s Bureau, many African-Americans received an education between the close of the Civil War and the beginning of the 1870 system of public schooling in Virginia. Some of their schools also were converted into regular public schools under the 1870 public school system. There is also evidence of Quakers. educating African Americans prior to the war.
For a preliminary essay on Freedman’s schools FreedmenSchools.