John Amussen

John Amussen

Controller/Business Manager

Marlborough School

Los Angeles, CA

John Amussen has over three decades of experience as a financial executive in Los Angeles. He spent nearly two decades in film industry finance, working for Columbia Pictures, Paramount Pictures and 20th Century Fox. In 2015, he transitioned to independent school finance, taking the position of chief operating & financial officer at Milken Community Schools in Los Angeles. In 2019 Amussen joined Marlborough as their Controller and Business Office Manager. He was born in New York City, attended high school in Minneapolis and received an A.B. in American Civilization from Brown University. He holds an MBA from the Anderson School of Business at UCLA.

Online Courses

Past Webinars

  • Culture and Compensation: How to Empower Your Faculty This item is protected

    October 9, 2026
    Discover how a school transformed faculty compensation from a traditional salary scale to an innovative banded system. Learn how they secured buy-in, sustained momentum over 9 years, and created a model that supports faculty growth, agency, and feedback.
  • 2026’s Back-to-School Legal & Regulatory Update This item is protected

    September 30, 2026
    Join independent school legal experts as they review recent changes to the law and answer your questions about how they may impact your school.
  • Grants Management for Independent Schools This item is protected

    May 26, 2026
    Designed for business officers who manage or oversee grants, this webinar provides actionable tools and templates to strengthen financial stewardship and enhance mission impact through effective grants administration.
  • Enrollment Forecasting as a Strategic Financial Tool This item is protected

    May 8, 2026
    This webinar presents a strategic approach to enrollment forecasting that blends the enrollment team’s relational insights with financial analysis and data modeling. Learn how to strengthen projections using internal data alongside external signals.
  • There's More Room for Change Than You Think This item is protected

    April 24, 2026
    To stay competitive in today’s educational landscape, independent schools should modernize spaces by aligning with evolving pedagogical trends and technology advancements. Learn how existing spaces can be transformed to better serve a campus community.

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