As the overseer of 23 elementary schools in Henrico County , Randolph developed the first in - service training program for black teachers .
As the overseer of 23 elementary schools in Henrico County , Randolph worked on improving the curriculum of the schools .
As the overseer of 23 elementary schools in Henrico County , Randolph developed the first in - service training program for black teachers and worked on improving the curriculum of the schools .