From the Annual Report on The State of the Teaching Profession draft report:
The calculations show that out of the 94,410 teachers employed during the 2019-2020 school year, 7,111 teachers were reported as attrition (i.e., no longer working in a North Carolina public school in the 2019-20 school year), resulting in an overall state attrition rate of 7.53%. This state-level attrition rate is slightly less than the attrition rate of the 2017- 2018 reporting year of 8.1% or the 7.59% during the 2018-2019 reporting year. Generally, teachers in North Carolina are remaining in the classroom.
Most teachers leave the profession due to personal reasons.
Note: The original post pondered the effects of COVID-19 on the attrition rate, but I later recalled the data are collected each March. It is not known if the 2019-2020 data captured any coronavirus-related attrition.