I have to say as a parent of a child who is one of 4 white children in the entire school I know the difficulties it can lead to.
an example "argument" between ds1 and another child.
child "you bought your shoes in Poland"
ds1 "whatever you bought yours in africa the last time you visited home" (the child is african)
cue the child attacking my ds1, the child got sent home for the afternoon and the school did not contact me to tell me ds1 had been punched in the head repeatedly, I did not find out until i picked him up. I phoned the headteacher the following morning to say ds1 would not be in as he had been up with a headache most of the night and i was taking him to the gp as he said it was really sore where he had been punched.
The heads reaction?
"Well yes he was quite violently and viciously attacked but he obviously did something to instigate it"
I kept him off of school for almost a month as the school were not willing to see that the other child was also at fault. I also wrote to the school and asked if it was because he was white and the school did not want to be seen as racist that they constantly found fault with every little thing ds1 did. I never recieved a reply. When i eventually sent ds1 back to school, I was told at the end of the day by ds1 that he and the other child had been called into the heads office, ds1 was put in a book for being racist and the other child was told not to attack him again. DS1 queried this and was told the other child had not made a racist comment by saying he had bought his shoes in Poland, but he had by saying the same about africa.
Now tell me how is it racist to say to an african child (well of african descent) he bought his shoes in africa BUT is not racist to tell a child of Polish descent he bought his shoes in Poland?
Hence the reason that now he is due to start secondary in September I have only listed one choice, the one with a mix of nationalities. If he does not get in i will be appealing there is no way in the world i am sending him to one of the other local schools where he will be the minority.