“…Past Research. Past research has used Tier 1 through Tier 3 data to examine the number of individuals obtaining principal licensure (e.g., Lankford et al, 2003), the percentage of individuals obtaining licensure who became employed as an assistant principal or principal (e.g., Bastian & Henry, 2015;Davis & Anderson, 2020), the years from licensure to employment as a principal (e.g., Davis et al, 2017;, the length of time between employment as an assistant principal to principal (Bailes & Guthery, 2020;Crawford & Fuller, 2017), distribution of principals (e.g., Clotfelter et al, 2006;Loeb et al, 2010), principal turnover (e.g., Snodgrass Rangel, 2018), and principal mobility patterns (e.g., Baker et al, 2010) In general, this body of research using state administrative data sets (mostly data from Missouri, New York, Illinois, North Carolina, Tennessee, and Texas) has concluded that more individuals obtain licensure than the number of vacancies each year, between 50% and 75% of those obtaining principal licensure become employed as a principal or in a school leadership position, the average years from licensure to employment as a principal is about 5 years (Bastian & Henry, 2015;Davis et al, 2017), an increasing number of newly licensed principals become an assistant principal prior to becoming a principal (Crawford & Fuller, 2017;Fuller et al, 2019), principal attrition and turnover are higher than teacher attrition and turnover (e.g., Bartanen et al, 2019), and salaries incentivize principals to move from one school to another (e.g., Baker et al, 2010;Pendola, 2021). To what extent these findings hold across individual labor markets and states is only speculation, given the lack of available data to conduct similar studies elsewhere.…”