We are truly “Spreading Our Wings” with this exciting new 60,000 square foot addition to campus designed to enhance the co-curricular programs that play an important role in shaping the heart and mind of every Firebird.

Parent FUN-draiser Events & Grand Prize Raffles

Thank you to all who attended our exciting fundraising events in honor of the conclusion of our capital campaign, Spreading Our Wings To Soar Higher

There is still time to make a donation to be entered to win one of our unique grand prize raffles!

More Information Here


It is because we believe we can continue to transform the world through our unique approach to an education of hearts and minds. We do this by providing a world-class education combined with strong moral values grounded in the Marianist philosophy.


For more than 30 years, the priests and brothers of the Society of Mary, along with the lay faculty and administration, have dedicated themselves to implementing a comprehensive liberal arts curriculum at Kellenberg Memorial which is balanced by strict attention to civility, order, and respect. Graduates of Kellenberg Memorial are able to think critically, communicate clearly, and act with integrity. The core Catholic values instilled in our students stay with them as they go on to top tier colleges and universities and become leaders in their chosen professional paths.

Kellenberg Memorial has been evolving since our doors opened in fall of 1987. Some of the more significant changes over the past three decades have included:

  • The addition of bucolic courtyards and beautiful woodwork to transform brick and mortar into an atmosphere that educates
  • Launching the Brother Joseph C. Fox Latin School for sixth, seventh, and eighth graders,
  • The introduction of 1:1 technology where all students and teachers utilize iPads
  • The development of a technology-enabled curriculum
  • The expansion of STEM-related electives and co-curricular activities.

We are committed to constantly evolving to ensure we continue to provide a high-quality, affordable education to prepare the youth of Long Island for successful, happy, faith-filled lives.

Over the past 30+ years, Kellenberg Memorial has sent forth nearly 13,000 Firebirds, transforming the world through hearts and minds nurtured through their Kellenberg experience. Our graduates go on to transform the world by becoming global leaders in finance, law, medicine, technology, education, civil service, and engineering. Many Firebird alumni choose lives of service to others by serving as first responders, entering into religious life, or becoming members of the armed forces, police departments, and fire departments.

Saint Pope John Paul II once wisely stated, “The future starts today, not tomorrow.”  In order to ensure that countless generations of Firebirds receive an equally innovative Catholic, liberal arts education rooted in the Marianist tradition in the future, the administration of Kellenberg Memorial is taking bold steps today.  A dedicated, dynamic Advisory Board has been established in order to guide and assist the administration as it strategically plans the steps to be taken to shape the vision for the future of the school.

Our Jim and Diane Rowen STEM Center

Photos from the 2020-2021 School Year

Tour of Our Jim and Diane Rowen STEM Center

Greater Things are Yet to Come.

Curriculum Enhancements

The Jim & Diane Rowen STEM Center was unveiled in January 2021. The state-of-the-art space is a masterpiece of thoughtful design and innovation in the areas of science, technology, engineering, and math education. The new wing, which is named after generous benefactors and project advisors Jim and Diane Rowen P’16, features five separate labs: a chemistry lab, a physics lab, a multi-purpose lab to be used by Kellenberg’s Science Olympiad team, as well as a prep room and a collaboration room. The Jim & Diane Rowen STEM Center replaces science labs that were original to the 1960s campus that has been home to Kellenberg Memorial High School since its establishment in 1987.

The liberal arts curriculum continues to expand to include newly added courses in math, science, and engineering, as well as provide additional opportunities for students to earn college credit with local colleges and universities.

Ongoing investment in faculty will include dedicated lab faculty, enhanced professional development, and additional resources in college placement.

Student Activities

A newly constructed 60,000-square-foot arts and activities building will be added to the west side of the school building.

The building will house two basketball courts, practice spaces for the Dance Team, Cheerleading, and Blue and Gold, as well as a small bowling alley, golf simulator, and multiuse presentation space.

A music center will be constructed on the lower level, giving the band and orchestra rehearsal space with proper soundproofing and acoustic treatment.

The new multi-purpose building will ease the overburdened main school building and provide appropriate homes for many student activities, including homeroom competition days and various apostolic events.

Athletic Facilities

The track has been resurfaced using a new rubberized, polyurethane material, providing an enhanced experience for athletes, physical education classes, youth sports participants, and community events.

The boys’ and girls’ locker rooms are completely renovated.

New bleachers overlooking Saint Matthew Field provide increased seating and accessibility in conformity with the Americans with Disabilities Act. A new press box assists with our ability to live stream home athletic competitions. 

Our new athletic complex on the corner of Hempstead Turnpike and Glenn Curtiss Blvd. includes two regulation-size fields for soccer and football, as well as a tennis center with six courts. 

Campus Enhancements

A new stone entryway will grace the main entrance to campus along Glenn Curtiss Boulevard.

Saint Mark Field has been converted to a new parking area, making access to campus safer and more convenient.

Additional outdoor lighting and security cameras continue to be installed throughout campus, ensuring the highest degree of safety for students, parents, and visitors.

Apostolic Facilities

Our new retreat house, Stella Maris, in Islip, NY, sits on over six acres of peaceful waterfront property. 

Stella Maris provides valuable space for all of our retreat programs and gives students additional opportunities to focus on faith and discernment.