I would imagine that every middle school in the country deals with some level of student fighting. Whether there is more interracial or normal fighting at this school versus other schools in the area is best answered by the students, school offcials and parents.
In my opinion, the best online resource to assess whether a particular school is right for your child is http://www.greatschools.org.
Beyond that I would take a trip to the school to see it in action and get some feedback from students and teachers.
I hope this has been helpful. Good luck in your search.