This report presents selected findings from the Public School Principal Status Data File of the 2016-17 Principal Follow-up Survey (PFS). The PFS is a nationally representative sample survey of public K-12 schools in the 50 states and District of Columbia and was initiated to inform discussions and decisions regarding principal attrition and mobility among policymakers, researchers, and parents. Schools with a principal who returned a 2015-16 National Teacher and Pricipal (NTPS) principal questionnaire were included in the PFS sample. The PFS consisted of only one item and, between school and principal responses, had a response rate of about 95 percent. To facilitate analysis, this item and variables derived from it were added to the NTPS Public School Principal Data File. The 2016-17 PFS assessed how many school principals in the 2015-16 school year still worked as a principal in the same school in the 2016-17 school year, how many had moved to become a principal in another school, and how many had left the principalship altogether. This 2016-17 principal status variable is used in conjunction with 2015-16 NTPS school and principal characteristics for the analyses in this First Look report.