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Senior Leadership Team

Mr. Ryan Allison

Mr. Ryan Allison

Director of Marketing and Communications

Ryan brings over 20 years of experience in communications and marketing to Harrow International School New York. His career includes roles as the National Spokesperson and National Field Marketing Manager for a globally recognized brand, Director of Marketing & Communications for major charitable organizations, and leadership positions in marketing and communications at two international day and boarding preparatory schools in the U.S. 

Ryan's media presence includes more than 200 in-studio appearances on television news stations across the U.S. and co-hosting a nationally aired infomercial alongside a Disney Channel chef. His public relations initiatives have supported over 175 local and national charities. He has worked on marketing and communications contracts for major corporations including Microsoft, Google, Samsung, ChangHong, Motorola, T-Mobile, Verizon, Hisense, Ferrari, Ford, GMC, VW, and Chevrolet. He has also served as a brand spokesperson at three NFL Super Bowls, Monday Night Football games, NASCAR races, MLB games, and numerous International Consumer Electronics Shows (CES).

Ryan enjoys spending time with his wife Elizabeth, who is originally from Peru, their two children, and their two rescue cats. Their son Joshua, an Eagle Scout, is studying mechanical engineering on a full academic scholarship. Ryan attended Brainco - The Minneapolis School of Advertising & Design and The Pennsylvania State University.

Ms. Charmaine Cooper

Ms. Charmaine Cooper

Director of HR and Finance

Charmaine Cooper brings over 25 years of experience in HR, finance, and business management to her role as Head of HR and Finance. She has worked in both not-for-profit and for-profit sectors, gaining knowledge across various industries. At Wetherby-Pembridge School in New York, part of the Alpha Plus Group, she managed HR, operations, and finance, developed onboarding programs, ensured compliance with employment laws, and supervised procurement and financial reporting.

Previously, Charmaine was the Regional Business Operations Administrator at Children’s Aid in New York, where she was committed to serving young people. She oversaw daily operations, managed budgets, and ensured compliance across multiple schools. She also managed staffing activities, participated in audits, and addressed deficiencies.

Charmaine has experience working in education, the financial industry, healthcare, media, reinsurance, and as a tax professional. She holds a Master’s in Human Resources from The New School University and a Bachelor’s in Business Administration from Baruch College (CUNY). She is passionate about helping people and streamlining organizational processes.

Outside of her professional pursuits, Charmaine enjoys spending time with her family, traveling, and gardening

Mr. Frederick Dumlao

Mr. Frederick Dumlao

Director of Facilities and Operations

Frederick is a seasoned operations management professional with over 20 years of experience. Currently serving as the Director of Facilities and Operations, he has built a diverse and impressive career since completing his undergraduate studies at Columbus State University in 2003.


Frederick’s career began with a 10-year tenure in the US Military as a Multi-functional Logistics Officer (90A), where he completed multiple tours in Iraq and Afghanistan and was awarded three Bronze Star Medals for his service. After transitioning to civilian life, he worked as a Department of Defense contractor, serving as an embedded training and development Subject Matter Expert (SME) advisor to the Afghan Military, focusing on sustainment logistics operations.


He then advanced to roles such as Facility Director for a community center and facilities manager for a large financial institution, further honing his expertise in facilities management. His extensive experience spans management in transportation, supply chain, maintenance, facilities, and physical security, showcasing a robust and versatile career.

Frederick is married to Lauren, and together they have three energetic boys: Daniel, Connor, and Jack. Their family is completed by their beloved Shih Tzu, Lola. Frederick enjoys spending time outdoors, especially fishing, which he finds to be a great way to unwind and connect with nature. He is passionate about being at the forefront of creating an environment that delivers world-class education at Harrow New York.

Ms. Julie Kaplan

Ms. Julie Kaplan

Director of Admissions

Born and raised in Manhattan, Julie possesses extensive educational experience spanning a 35-year career. At a leading K-12 NYC private school, serving as Admissions Director for three decades, she taught various academic subjects, conducted Art History seminars, and managed the Overseas Study Program, fostering global cultural immersion.

A recognized authority in education and independent school admissions, Julie presents on panels for prestigious institutions, including banks, law firms, and Parents' League of NY. She governs on the Board of Trustees of two premier NYC independent schools, and is Parents Association Chair of another.

Julie’s multi-faceted background incorporates business, real estate, sales and broadcasting. Her worldwide travels and schooling in Switzerland, France, and the U.S. honed her bilingual proficiency in French and English, significantly enhancing her communication skills. An eternal student, Julie holds a Master’s in Education from NYU with a specialty in French and Art History, alongside degrees from Brandeis, Cornell, NY School of Interior Design, and NY Real Estate Institute.

Outside her professional arena, Julie is an artist, traveler, tennis player, environmentalist, and animal advocate. She resides in NYC with her husband, son, and two rescue dogs. Her profound qualifications and zeal for education underscore her role as an invaluable asset to Harrow New York.

Click here to watch a video of Ms. Kaplan as she describes the Harrow New York Community.

Ms. Kristine Lewis

Ms. Kristine Lewis

Director of Boarding and Pastoral Care

Kristine Lewis, our esteemed Director of Boarding and Pastoral Care, hails from New Hampshire, USA. A distinguished scholar-athlete, Kristine was a basketball All-American at the University of New Hampshire, where she earned a BSc in Media and Communications with Physical Education. Her passion for teaching was ignited during her career as a professional basketball player in Sweden and Spain, where she also coached younger players.

Kristine began her educational career in the United Kingdom at Dulwich College Prep School. She later joined Sevenoaks School, a prestigious co-educational day and boarding school. During her 17 year tenure at Sevenoaks, Kristine held the position of Head of House, overseeing the care and development of 60 girls aged 13-18. She also served as a college guidance counsellor, assisting students with their applications to universities in the UK and internationally, and contributed as a sports coach in the PE department. In her final years at Sevenoaks, Kristine was appointed Head of Sixth Form Admissions, where she excelled in recruiting students from around the world.

With her three daughters embarking on their own careers, Kristine embraced senior leadership roles in the Middle East and Switzerland. We are now privileged to have her as a vital member of our Senior Team in New York, where she continues to bring her extensive experience, dedication, and passion for student development to our community.

Click here to watch a video featuring Ms. Lewis as she describes boarding & pastoral care at Harrow New York.

Mr. James Mower

Mr. James Mower

Director of Studies

With a career spanning North America, Australasia, Europe, and Asia, James is a highly accomplished education professional with a wealth of experience in the international education sector. 

Leveraging his expertise in educational leadership, James has made a significant impact in elevating academic and pastoral outcomes in established schools in China and Thailand, while his experience as part of the founding leadership teams for British schools in Dubai and Malaysia has honed his start-up expertise.  

With a strong academic background and a passion for lifelong learning, James constantly strives to expand his knowledge and expertise. He holds a Master's level qualification in Leadership and Management in Education, as well as a Master's in Education with a specialization in the International Baccalaureate. 

James and his family are thrilled to have relocated to New York, excited by the opportunity to bring world-class Harrow education to the USA. James' wife, Alyson, has joined the school admissions and HR team, bringing her expertise and enthusiasm to her role and their two children are eagerly anticipating the numerous opportunities afforded by a Harrow New York education.

Click here to watch a video featuring Mr. Mower as he describes the Harrow New York Super-Curriculum.

Mr. Sean Sharp

Mr. Sean Sharp

Director of IT and Systems

Sean commenced his career in IT support within the educational sector in 2009 as the Network and Systems Administrator at a sizeable public school in western Suffolk County. By 2011, he had progressed to a leadership position at a smaller institution situated at the eastern end of Long Island. Over the subsequent decade, Sean spearheaded numerous technological initiatives, overhauling an antiquated IT infrastructure to create a modern and efficient system.

Having served as Director of Technology for many years, Sean transitioned to the role of Technical Services Manager at a local Managed Services Provider. In this capacity, he collaborated extensively with over a dozen public and private schools across Long Island, providing expert guidance on cybersecurity, physical security, technology upgrades, software implementations, and staffing solutions.

Mr. Matthew Sipple

Mr. Matthew Sipple

Project Lead and Vice Principal

Matthew Sipple, a seasoned professional with an extensive background in educational leadership, has held prominent roles in diverse American and International schools across North America, Asia, Europe, and the Middle East. With a career spanning back to the early 1990s, Matthew's experience encompasses a wealth of knowledge in fostering academic excellence and organizational development.

A dedicated scholar, Matthew pursued his academic credentials with a Bachelor of Arts in History from the University of Pittsburgh, followed by a Master of Arts in History from the University of Pennsylvania. He furthered his educational pursuits by obtaining a Master of Arts in Educational Leadership from Teacher’s College at Columbia University, complemented by a current New York State certification as a School Administrator.

Matthew's leadership tenure includes significant contributions to prestigious International Baccalaureate World Schools like The International School of Amsterdam, Oberoi International School, and the American International School of Riyadh. Moreover, he has utilized his expertise in pivotal positions at renowned boarding institutions such as EF Academy and Leysin American School. Matthew also has a prior connection to Long Island, having served as the Assistant Headmaster and Head of Upper School at Buckley Country Day School in Roslyn.

Returning to Long Island, Matthew is delighted to leverage his multifaceted experience in educational leadership to advance the success of Harrow International School New York, and directly assist the team in achieving its vision to inspire students to lead purposeful lives as global citizens.

Click here to watch a video featuring Mr. Sipple as he describes the value of an international education.