For those seeking ways forward on systemic bias

I was urge the close reading of this piece from the Hechinger Report regarding work happening most particularly in Cambridge, but also elsewhere. You'll note that it isn't a "one and done" on PD. Because it can't be.

Mitigating the effects of implicit bias on student behavior and performance requires teachers working closely with their peers, and school leaders making those efforts a priority. This isn’t a quick fix. The effort must be ongoing.
“There’s no evidence to show that a one-day training for teachers and staff will foster change,” says Circe Stumbo, president of West Wind Education Policy, an Iowa-based group that provides analysis of school equity policies. What’s needed, she says, is a schoolwide commitment to making cultural proficiency a priority, with systems in place for continual personal reflection and accountability.