looked deeper into our policies, we realized that we didn't need anything policy-wise. Why create something that might handcuff the ability of teachers to do their job effectively? We had Standards of Professional Conduct. We had policies on student communication and communication using school-owned devices. We saw these and decided what we needed were some simple best practices. These included things like:
Protecting your own privacy
Being honest
Respecting copyright laws
Disclaimers
Thinking about consequences