Considerations around teacher attrition, supply and demand, and retention are incomplete without including teacher mobility. The problem, as it currently stands, finds SBAE ill-equipped, at the professional level, to support mobile teachers. Providing support, however, starts with understanding the population; in this case, mobile teachers. The purpose of our study was to quantitatively describe teacher mobility in Minnesota over the last 20 years (1999-2021). To describe SBAE teacher mobility in our state, we utilized teacher retention data compiled from state teacher directories over the last 20 years (1999-2021). We corroborated previous findings noting heightened attrition after year one in a new school, and school retention of mobile teachers to average about three years. These findings bear implications for our pre-service preparation, induction level support, and mid-career advice and support relative to the suggested reduction of frequency in mobility with additional teaching experience.