One answer for a question you never asked is this. Send them to an international, preferably French-American school for education. My son, who is of a mixed (Asia / Europe) race, went there to sublimate his potential weakness, and mixed children just thrived there! Multiculturalism, dozens of languages spoken in the hallways, I just remember two girls, twins, French/ African mix, were the most beautiful out there. No one blinked, ever. That was the perfect environment that celebrated cosmopolitan international culture in a small school environment.

It was the best experience for my son, who is now very successful in college and in young adulthood.

I hope you consider this option for your daughters.