well, if they are going to remove ‘dixie’ as somehow offensive, than they might as well remove all northern names too, since the north and south held slaves until 1829 or so. And then we can get to the ethnic names related to slavery - anything from Africa, India, Arabia, Asian, Canada, Europe, Polynesia, on and on.
Otherwise renaming the school is nothing more than cultural genocide of a specific population.
King County, Washington, was named for a Vice President of the US, but some years ago they changed it to be named for the civil rights leader.