united church school in yeoville expelling foreign students

i would like to talk about what the united church school in yeoville , johannesburg is doing to its foreign students . two weeks ago all foreign students who study at the school were chased by the principal and they were told that they would receive an expulsion letter ; because they do not have proper documentation . apparently they said that such action were authorized by the department of home affairs .let me precise that those said students have been studying at that school for years so some of the parents contacted the home affairs offices and to their surprise it is not allowed to chase students for improper documentation . the parents of the students have been working to get good documentation for their children they are not living in south Africa illegally ;some get road blocked by the department of home affairs . but the principal of the school does not want to hear any of it .and some of the students have been expelled or are waiting to be expelled from he school .