Over a century of research on K-12 public school principal time use (PTU) illustrates that principals spend time on professional tasks beyond the instructional hours of their school days. Similarly, a century of research on the division of household labor suggests that women spend more time on household labor than men daily. However, no prior PTU study has recognized this gendered imbalance of household labor. The purpose of this study was to collect PTU data and household labor time use data from female and male principals, assistant principals, and aspiring principals to explore how the additional time demands of household labor may be impacting the disproportionate number of female principals to female teachers. Twenty principal pipeline participants (PPPs), composed of ten women and men from two northeastern states, completed a 24-hour electronic time diary for seven consecutive days to record their professional and household tasks in phase one of the explanatory sequential mixed methods study. For phase two of the study, two women and two men from each PPP group participated in semi-structured interviews based on their quantitative time diary data. The final connected quantitative and qualitative results indicated that women in the present study spent more time on their professional tasks as they advanced along the principal pipeline, and this time was more likely to be marked by multitasking and blurring professional and household boundaries to manage their competing demands than their male counterparts. Female assistant principals were the only PPP group of women who recorded more time spent on household tasks than their male counterparts. Additionally, women and men in the present study valued convenience and proximity to home when considering their current professional roles and possible advancement along the principal pipeline. Recommendations for future research are offered and implications for practitioners and policymakers are discussed. [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://www.proquest.com/en-US/products/dissertations/individuals.shtml.]