What Kellenberg Memorial High School does

Kellenberg Memorial High School is a private, independent Catholic college-preparatory institution in the Marianist tradition, serving students in grades 6 through 12 on a 21-acre campus at 1400 Glenn Curtiss Boulevard in Uniondale, Nassau County, New York. Founded in 1987 and operated by the brothers and priests of the Marianist Community, the school offers an exclusively college-preparatory curriculum with academic programming in STEM, humanities, and senior seminars alongside an affiliated middle school program (the Bro. Joseph C. Fox Latin School, established 1988) for grades 6-8. The institution is accredited by the Board of Regents of the State of New York and the Middle States Association of Colleges and Schools.

The school's product surface extends well beyond the classroom. Faith formation runs through the ARK program (Apostolic Response at Kellenberg), which includes monthly XLT Eucharistic Adoration services for grades 6-12, retreats at the on-campus Emmanuel Retreat House and at Founders Hollow in upstate New York, sodality prayer services, and a Catholic Experience Summer Program. The newly opened Firebird Center for Arts & Athletics (2026) houses practice facilities, band and orchestra spaces, a golf simulator, and a bowling alley, while the Carlo Acutis Tech Center (dedicated November 2025) anchors technology education. Additional co-curriculars include a CHSAA athletics program, student publications (The Phoenix newspaper and The Renaissance literary magazine), a STEM program including Science Olympiad, and the SALT service-and-leadership initiative.

Kellenberg generates revenue through recurring tuition and educational services paid by enrolled families, augmented by summer camp fees, philanthropic giving via the Shepherd's Fund and the Spreading Our Wings capital campaign, and charitable athletics events. Enrollment is gated by performance on the Catholic High School Entrance Exam and supported by a dedicated admissions office, open houses, and campus tours. Marketing distribution runs through organic social channels (Facebook, X, Instagram, LinkedIn, YouTube), the Kellenberg Podcast distributed on Apple Music, Spotify, and SoundCloud, and the Heart & Mind family magazine. The school employs 101-250 staff and reports revenue figures are not publicly disclosed.

Name

Kellenberg Memorial High School

Legal name

Kellenberg Memorial High School

Website

https://kellenberg.org

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

101–250 employees

Short description

Kellenberg Memorial is a private Catholic college-preparatory school in the Marianist tradition serving grades 6-12 in Uniondale, NY. Operated as a nonprofit by the Marianist religious order, it delivers tuition-based education, athletics, faith formation, and arts programs on a 21-acre campus.

Ownership category

akta.pro rank

Product category

Private Catholic K-12 Education

NAICS

Elementary and Secondary Schools (6111), Elementary and Secondary Schools (611110)

SIC

Services-Educational Services (8200)

akta.pro primary industry

Faith-Based (Religious) K–12 Schools (EDAJABAC)

Keywords

• Catholic secondary education
• College preparatory programs
• Faith-based schooling
• Private K-12 education
• Marianist tradition education

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Tuition and Educational Services: Private Catholic school operating on tuition revenue from enrolled students in grades 6-12. The school offers college preparatory education in the Marianist tradition through its Latin School (middle school) and high school programs.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels9 records

Core offering

Kellenberg Memorial High School provides private Catholic college preparatory education in the Marianist tradition for students in grades 6-12 on Long Island. Its offering includes the high school curriculum (grades 9-12) and the affiliated Brother Joseph C. Fox Latin School (grades 6-8), supplemented by faith formation (ARK/XLT), athletics, STEM, arts, summer camps, and college placement services.

Product overview

Kellenberg Memorial High School operates as a unified educational institution comprising the high school (grades 9-12) and the Brother Joseph C. Fox Latin School (grades 6-8). The school offers a comprehensive college preparatory curriculum complemented by extensive co-curricular programs including athletics, faith formation through the ARK program with monthly XLT adoration services, student publications (The Phoenix newspaper and The Renaissance literary magazine), STEM programs, and summer camps. The institution recently opened its Firebird Center for Arts & Athletics, a state-of-the-art facility providing enhanced spaces for arts, athletics, and student activities.

Differentiator

Problem solved

Functional benefit

Brands

• Bro. Joseph C. Fox Latin School: A qualitative Catholic middle school education for grades 6-8 operating within the Kellenberg Memorial campus.
• The ARK
• Blue & Gold
• The Phoenix
• The Renaissance

Products and services

• Kellenberg Memorial High School Education Private Catholic college preparatory education for grades 9-12 on Long Island, offering an exclusively college-preparatory curriculum with three academic programs preparing students for college studies, complemented by faith formation, athletics, STEM, and arts programs.
• Brother Joseph C. Fox Latin School Qualitative Catholic middle school education for grades 6-8 in the Marianist tradition, providing middle school students with a challenging curriculum that stimulates intellects and expands understanding, using the high school's resources on the same campus.
• Summer Camps

Quantifiable outcome

• First NSCHSAA league title since 2017 and first ever state tournament appearance in school history for Varsity Baseball
• +1 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Nine partnerships are on record, tiered minor and core.

• ChaminademinorStrategic or Co-development PartnerChaminade students are invited to attend XLT events, bringing together students from both Marianist high schools on Long Island for faith activities and fellowship.
• Founders HollowcoreStrategic or Co-development PartnerMarianist Retreat Facility in upstate New York where students attend retreat programs. Part of the school's faith formation infrastructure.
• Molloy UniversityminorStrategic or Co-development PartnerHost venue for Varsity Softball annual benefit game. Partnership for community service and charitable fundraising events.
• Long Island Council on Alcoholism and Drug Dependence (LICADD)minorStrategic or Co-development PartnerCharitable partner for annual softball benefit game raising funds for substance abuse awareness and support services.
• Nassau Suffolk Autism SocietyminorStrategic or Co-development PartnerCharitable partner for varsity softball autism awareness benefit game, raising over $3,200 for autism awareness.
• St. John's UniversityminorStrategic or Co-development PartnerPhysics students visit St. John's University science labs, including the St. Vincent Health Sciences Center, for hands-on learning experiences.
• Adelphi UniversityminorStrategic or Co-development PartnerKellenberg Business and Finance club participates in Adelphi University's Annual Apprentice Challenge for business skill development.
• Diocese of Rockville CentrecoreStrategic or Co-development PartnerDiocese affiliation for Catholic identity, vocational guidance, and faith formation programs. Bishop Barres visited for blessing of Carlo Acutis Tech Center.
• Molloy UniversityminorStrategic or Co-development PartnerSoftball team played charity game at Molloy University benefiting Long Island Council on Alcoholism and Drug Dependence, raising over $3,000.

Scale indicators4 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Regis High School: Jesuit Catholic tuition-free college-prep high school in Manhattan. Comparable elite Catholic male college-prep institution with strong academic reputation; relevant benchmark for Catholic HS prestige and selectivity.
• Holy Trinity Diocesan High School: Catholic diocesan high school in Hicksville, Long Island. Comparable Catholic college-prep model serving overlapping Nassau County/Suffolk County families; competes in similar CHSAA/NSCHSAA athletics leagues.
• Xavier High School: Jesuit Catholic college-prep high school in Manhattan. Comparable elite Catholic male college-prep model with rigorous academics, extensive retreat programs, and strong college placement; relevant benchmark for faith-based college-prep excellence.
• Mount Saint Mary Academy: Catholic all-girls college-prep high school in Watchung, NJ. Comparable Catholic-sponsored college-prep model with strong faith formation and STEM programs; relevant peer for Catholic HS comparison beyond Long Island.
• Xaverian High School: Catholic college-prep high school in Brooklyn, NY, sponsored by the Xaverian Brothers. Comparable Catholic male-only college-prep model with strong athletics and faith tradition; relevant peer for New York metro Catholic HS benchmarking.
• Saint Mary's High School (Manhasset): Catholic co-ed college-prep high school in Manhasset, Long Island. Comparable Catholic college-prep institution serving Nassau County families with similar athletics and faith programming.
• St. Anthony's High School: Large Catholic co-ed college-prep high school in Huntington, Long Island. Competes for the same Long Island Catholic families with comparable athletics, college-prep curriculum, and faith formation programming.
• Our Lady of Mercy Academy: Catholic all-girls college-prep high school in Syosset, Long Island. Comparable Catholic-sponsored college-prep institution serving overlapping Long Island families with similar faith-based programming and athletics.
• Chaminade High School: The other Marianist Catholic high school on Long Island, located in Mineola. Directly comparable in mission, tradition, and competitive athletic rivalries (e.g., CHSAA volleyball). Most analogous peer in the immediate market.
• Saint John the Baptist High School: Catholic diocesan high school in West Islip, Long Island. Comparable Catholic co-ed college-prep model competing in the same NSCHSAA league and serving overlapping Long Island Catholic families.

Market position

Strengths5 records

Weaknesses2 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/kellenberg
• YouTubeyoutube.com/channel/UCB0LSmz6i3MMXNyDNoxGyKA
• Facebookfacebook.com/KellenbergMemorialHighSchool
• LinkedInlinkedin.com/groups/8346199
• Instagraminstagram.com/kellenberg

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kellenberg Memorial High School