Kari Ostrem:

Head of School
Kari Ostrem is Riverdale’s Seventh Head of School. She began her official position with Riverdale in July of 2023.
Kari brings 25 years of experience to this position. She is a devoted educator, having spent her career at a combination of independent, public, and charter schools. She most recently served as the founding Head of School at the Haile-Manas Academy, the first nationwide residential school in Ethiopia dedicated to accepting students from different ethnic backgrounds. Kari built the academy from the ground up based on the principles of design thinking.
During her extensive career in education, Kari has also served as Academic Dean at The Lawrenceville School in New Jersey, where she advanced the school’s strong academic and experiential programs; Co-Director and Co-Founder of the Bronx Lab School, a public school tasked with providing an innovative and rigorous college-preparatory education to students in the Bronx; and Director of Science for KIPP NYC, a public charter school in New York City, leading the design of a new curriculum based on critical thinking and data analysis for elementary and middle school students. Kari also has extensive teaching experience at both the high school level (math and science) and collegiate level (adjunct professor of mathematics education) and was a founding faculty member of The Island School.
With her appointment as Riverdale’s next Head of School, Kari will continue to enthusiastically pursue the question of “how do we help kids thrive?”
And, Kari is passionate about deepening Riverdale’s connection with our neighbors in the Bronx, as well as expanding the School’s commitments to experiential education and sustainability.
Kari is also an experienced engineer with a bachelor of science degree in Engineering from Princeton University and a master of science degree in Environmental Engineering from Columbia University. Kari also attended and participated in the School Based Leadership Program at Baruch College.
Our Mission
Riverdale Country School is a Pre-K through Grade 12 independent school in New York City committed to empowering lifelong learners by developing minds, building character, and creating community in order to change our world for the good. With a deep commitment to diversity, equity, inclusion, and belonging, we empower our students to develop intellectual agency and achieve academic excellence within a warm and ethical community. Through a program of interdisciplinary and experiential education, we provide numerous opportunities that foster a love of learning. Ultimately, we want our students – and our alumni – to create meaningful change in their lives, communities, and the world around them.
Our Two Campuses
River Campus (PreK-5th Grade)
- 8 acres along the Hudson River
- 4 classroom buildings
- Black box theater
- Learning lab and build space
- Full-size playing field
- Tennis courts
- Greenhouse, hydroponic and traditional gardens
Hill Campus (6th-12th Grade)
- 19.5 acres with sweeping views of Van Cortlandt Park
- 6 academic buildings
- 2 science buildings
- Freestanding arts center including visual arts studios, rehearsal spaces, and maker space
- 3 playing fields
- Athletic Center
- Aquatics Center
Financial Overview
As a result of disciplined fiscal management, prudent endowment oversight, Riverdale Country School is on sound financial footing. The endowment stands at approximately $100M, and the school consistently balances its budget. Riverdale’s revenue sources include tuition, endowment income, and the Annual Fund which brings in approximately $8M. The school awards financial aid of approximately $12M to support socio-economic diversity, assisting approximately 20% of the student body.
Riverdale Country School continues to maintain its status as one of the nation’s most competitive schools. The combination of disciplined spending, capable endowment management, and strong annual fund support will position the school well. Increasing the endowment is seen as a high priority if the school is to remain in the position of strength it currently holds. The most recently completed accreditation affirmed the school’s many strengths and identified several initiatives and areas that the school needed to allocate additional resources as it seeks to retain its status as one of the nation’s top independent day schools. The CFO will be a key leader in positioning the school to be the educator of choice in preparing students for their future.
Target Hiring Salary Range
This position is expected to pay an annual salary in the range of $400,000 – $500,000. The final compensation offered to the candidate of choice will be determined based on work experiences, qualifications, and leadership skill sets.
Riverdale Country School Benefits
The CFO position at Riverdale offers a competitive salary and benefit package, which includes medical and dental plans, a pension plan, tuition remission (for children who are admissible to a most competitive admission process), four weeks of paid vacation, and, if needed a school-provided apartment (a taxable benefit).
The CFO position is based in Riverdale, The Bronx, New York and will require on-campus presence 5 days a week.
Working at Riverdale Country School is a purposeful and meaningful career choice that comes with many benefits. Please read more about the School’s generous and comprehensive range of benefits at:
https://www.riverdale.edu/riverdale-careers/benefits/
Riverdale Country School Benefits
| Riverdale offers and subsidizes health, dental, and vision insurance. In addition, the school offers a flexible spending account through which employees can use pre-tax dollars to pay for health-related expenses. | Employees are eligible to join our Defined Contribution retirement plan through TIAA. The school contributes 7% of an employee’s annual salary to their retirement account. | Riverdale Country School has a generous time-off policy for staff in addition to vacations afforded by the school calendar. | A generous professional development budget provides for conferences, skills training, and onsite training in areas such as mindfulness, coaching, and diversity, equity, inclusion, and belonging. |
Equity at Riverdale Country School
Riverdale Country School seeks diversity in its faculty, staff, and student body. In admission and employment policies and practices, in financial aid and loan programs, and in all its educational programs, Riverdale does not discriminate on the basis of race, color, religion, national and ethnic origin, disability, sexual orientation, sex, gender, gender identity or expression, and any other protected categories under applicable law.
It is the policy of Riverdale Country School to provide equal employment opportunities without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, age, national and ethnic origin, citizenship, marital status, disability, military status, or any other basis protected by applicable law to all qualified employees and applicants for employment.
Background Check
For the candidate of choice, a thorough background check, including a criminal background check, is required as a condition of employment.

Contact Information
Riverdale Country School has retained the executive search firm of Deerfield Associates to conduct this search.
To explore this career opportunity on a confidential basis, please send your resume, a letter of interest articulating your interest, skill sets and work experiences for this opportunity, and a list of five (5) references (which will only be contacted if mutual interest is determined) to:
Doug Cooney
Executive Search Consultant
DEERFIELD ASSOCIATES Executive Search, Inc.
572 Washington Street, Suite 15
Wellesley, MA 02482
Telephone: 781-237-2800
Email: jobs@deerfieldassociates.com