Suzy,

Recommend a communication class?  I would Google classes in your area.  I don’t recommend anything online since face-to-face communication is what you need practice on.

I like Non-Violent Communication (NVC) for it is a great approach to communication.

I don’t think you can lose in taking any one that is out there.  Find one that fits your busy schedule.  Let me know which ones you are considering.

Good that you have a goal of Montessori to teach.  Have you considered Waldorf as well?

Mark