People
Sadie Albertyn

Sadie Albertyn

Senior Organizational Effectiveness Strategist

Mission & Data, LLC

Sadie Albertyn is Mission & Data’s senior organizational effectiveness strategist, combining her expertise in finance, education leadership and student-centered program design. Before moving into independent schools, Albertyn worked as an associate client advisor at Bridgewater Associates, the world’s largest institutional hedge fund. There she helped explain the firm’s complex portfolio strategies to employee-elected investment committees for municipal and state-level retirement systems.  Albertyn then worked for more than 15 years as an independent school teacher, department chair, dean and division head. She has experience in both day and boarding schools within the U.S. and abroad.  Sadie also serves on the board of trustees for a K-8 school for students with language-based learning differences. She holds a bachelor’s degree in economics from Barnard College and a master’s degree in economics from the University of Massachusetts.

Online Courses

Past Webinars

Net Assets Articles

  • Healthy Alternatives: Creating a MEWA This item is protected

    January 29, 2026
    Pooled benefit strategies can smooth renewal volatility, though shared governance means individual employers may need to compromise on coverage choices.
  • Congratulations to the 2026 NBOA Award Recipients!

    January 27, 2026
    This year’s recipients have elevated school financial strategy, advanced groundbreaking compensation research and pioneered AI frameworks for school business operations.
  • Byte-Size AI: Planning, Integrating Systems and Predicting This item is protected

    January 26, 2026
    Pine Crest School has saved two weeks’ worth of work in the business office through automating just two processes, and that’s just the beginning.
  • Byte-Size AI: Automating Processes, Elevating Strategy This item is protected

    January 26, 2026
    Aspen Academy’s business office has gained significant time savings through AI, which has allowed staff to focus on higher-level strategy.
  • Byte-Size AI: Building Your Own GPT This item is protected

    January 20, 2026
    Sarah Hanawald, executive director of Association for Academic Leaders, shares how school leaders across the U.S. have been building their own bots.