321 Insight
A resource that we use at work is 321 Insight. I believe a subscription is required, but it's a great training resource. It has short trainings/videos and checklists and worksheets to prompt reflection. I am planning to use the Trauma-Informed Classroom unit in the fall for my teachers, which includes a checklist to see what strategies are already being implemented in your classroom.
https://www.321insight.com/
