Nationally, school divisions are examining data to address chronic absenteeism, identifying root causes of absenteeism and developing strategies to intervene to reduce student absenteeism. A data element often overlooked in school divisions' conversations about chronic absenteeism is the number of withdrawals and school transfers students make within a single school year, which is student mobility. The State of Colorado collects student mobility data annually. This quantitative study used ex post facto data to execute a time-series analysis from 2014 to 2019 to explore trends in student mobility across the eight regions of the state, examining potential differences based on year, region, and gender. A three-way repeated-measures analysis of variance was performed to evaluate statistical significance in the mean mobility rates of males and females over the 5 school years analyzed in the study. The results revealed two statistically significant main effects with years (p <.001) and regions (p <.001). There was also a statistically significant two-way interaction between years and regions (F = 3.334, p < .001). However, there were no statistically significant differences in student mobility based on the main effect gender, the two-way interaction between region and gender, the two-way interaction between years, and gender nor the three-way interaction among years, region, and gender. The findings suggest that school administrators should consider student mobility data when addressing attendance, academic performance, and student support. Recommendations for future research include examining the relationship between student mobility and absenteeism, analyzing the reasons for mobility, and engaging internal and external stakeholders to better understand the effects of student mobility. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]