Keep in mind that students are treated differently in damaging ways based on their race from kindergarten:
"A September 2021 study published in the journal Annals of the New York Academy of Sciences found that teachers tended to complain more about Black students, particularly Black boys. These teachers identified Black students’ behavior as more problematic, compared with white students, the authors wrote, even though these differences “were not seen in directly observed behavior in the laboratory.”
https://www.scientificamerican.com/article/half-of-the-250-k...