According to the Arizona School Risk Retention Trust, yes. âSchool districts may require employees to be vaccinated against COVID-19 as a condition of on-site work, subject to exemptions required by state and/or federal law,â read a legal memo prepared for the nonprofit Trust. The Trust, which provides public school districts and community colleges with property and liability insurance, also advised districts to consult with their own attorneys on legal issues related to any vaccination requirement. The first batches of the Pfizer and Moderna COVID-19 vaccines arrived to Arizona in mid-December for dosing to those 16 and older. Healthcare workers and long-term care facility staff and residents are among the first to receive the vaccine, to be followed by teachers, law enforcement and other critical workers. Other groups of individuals are farther down the line.