"Racial diversity" refers to a situation or environment where there are people from different races or ethnic backgrounds, creating a mix of various races within a group or community. Full definition
What is the level of racial diversity of teachers in traditional public schools? (newyorkschooltalk.org)
This is important in that while there appears to be decreases in racial diversity in the aggregate for individual students, there may be significant variability across schools. (ajeforum.com)
Research on racial diversity in small groups, however, makes it possible to draw some causal conclusions. (scientificamerican.com)