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

  • 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.
  • Effortless Efficiency: Payroll to Performance This item is protected

    April 13, 2026
    Efficiency is paramount through the entire Human Resources function. In this webinar, HR leaders and business officers will explore how to streamline workforce management from payroll processing to performance evaluation.
  • Mission (and Margin) Possible: Leveraging Campus Assets This item is protected

    March 30, 2026
    From summer programs and rentals to strategic partnerships, schools can unlock new income streams. This webinar explores practical strategies to maximize underutilized assets, assess operational readiness, and design sustainable initiatives.
  • Blending Respect and Efficiency in the Business Office This item is protected

    February 20, 2026
    Join members of NBOA’s volunteer Human Resources Council for a practical discussion on strategies to safeguard your working hours without compromising collegial relationships —all while saving time.

Net Assets Articles