We all know of this problem. i suggest we all make the classes with a 'buddy' system where the seating is arranged so that every race is represented. then, we set them group works where they need to discuss things in the seating arrangements.
Or, we could try to make funds available for this within the school system. if the students were to work at the school after hours, they could earn a bit of money and learn to work as a 'team.' they could do menial jobs like unthreading used clothing or washing clothes. this will raise a little money for the school and for them, and then they can get the things for their schools they need.
Or, they could make deals with certain suppliers of theirs for a few years for a little it of a discount, or something. when it comes to school uniforms, they could make their own, yes?