So, back then, they had white schools with white students and white teachers, and black schools with black students and black teachers.
I saw an interview with some black teachers from back then, and apparently, the black teachers recommended that the teachers be integrated before the students. Start with adult black teachers going to teach at white schools. Adults who truly knew what they were getting into. Adults who could pave the way and make life slightly easier for the children to follow.
It's hard enough being a kid to start with, but intentionally putting children into such situations seems so obviously intentionally cruel.