>> and just because i do not want critical race theory taught to my children in school does not mean that i am a racist. >> reporter: it's a decades old study of the legacy of racism in society. no evidence it's been taught in schools. dozens of state leaders have tried to ban it and conservatives have turned the phrase into a catch-all for any lessons that might make white students feel guilty. dr. ledbetter of southlakes carroll schools gave us an exclusive interview. a lawsuit and restraining order block him from working on diversity and inclusion plan for the kids. is there racism in southlake and this carroll? >> let me think about that question. i will stop there. i think it goes back to people understanding each other almost from an impathy standpoint, understand varying differences.