45 CFR 1304.40(a)(5) -- Meetings and interactions with families must be respectful of each family's diversity and cultural and ethnic background.
45 CFR 1304.52(b)(4) -- Staff and program consultants must be familiar with the ethnic background and heritage of families in the program and must be able to serve and effectively communicate, to the extent feasible, with children and families with no or limited English proficiency.
45 CFR 1306.20(e) -- Classroom staff and home visitors must be able to communicate with the families they serve either directly or through a translator. They should also be familiar with the ethnic background of these families.