Kellenberg Memorial High School
Independent Catholic school · Grades 6–12
Uniondale, NY
1400 Glenn Curtiss Blvd, Uniondale, NY 11553
Overall grade: B
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B-Class size
- A-College-going
- A-Years serving families
- A-Diversity
What stands out
- The largest of 328 Catholic schools in New York
- 92% of graduates go to four-year colleges
- Serving families in Uniondale since at least 2011
Kellenberg Memorial High School is an independent Catholic school in Uniondale, New York, for students from 6th grade through 12th grade. It has about 2,692 students and around 22 students per teacher. Its enrollment has held steady since 2011–12. The school is part of the Diocese of Rockville Centre. The school reports that about 92% of its graduates go on to four-year colleges. Students attend about 6.5 hours a day, 178 days a year.
At a glance
- Grades
- Grades 6–12
- Students
- 2,692
- Teachers
- 123.3 (full-time equivalent)
- Students per teacher
- 21.8
- Boys and girls
- Coed · 1,439 girls, 1,253 boys
- Religious affiliation
- Catholic · Independent Catholic school
- Diocese
- Diocese of Rockville Centre
- School day
- About 6.5 hours
- School year
- 178 days
- Graduates going to 4-year colleges
- About 92% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
Be the first to share what you love about Kellenberg Memorial High School.
How it compares
- Larger than 95% of Catholic schools in New York.
- Compared with 22 Catholic schools in New York.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Catholic Educational Association
- A state or regional independent school association
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about Kellenberg Memorial High School
What grades does Kellenberg Memorial High School serve?
Kellenberg Memorial High School serves grades 6–12.
How many students attend Kellenberg Memorial High School?
About 2,692 students, with 22 students per teacher, according to official records.
How much is tuition at Kellenberg Memorial High School?
Call the school to ask about tuition, financial aid and payment plans.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
Other private schools nearby
St. Martin De Porres Marianist School
Independent Catholic school · Grades Pre-K–8
One of 2 Catholic schools in Uniondale
Uniondale, NY1.2 mi
Hanc - Middle & High School
Jewish day school · Grades 7–12
The only Jewish school in Uniondale
Uniondale, NY1.3 mi
Long Island Montessori School
Montessori school · Grades Pre-K–K
The only preschool in Westbury
Westbury, NY2.1 mi
Community Academic Prep
Independent school · Grade 11
Smaller classes than 73% of independent schools in New York
Roosevelt, NY2.4 mi
Progressive School of Long Island
Alternative school · Grades K–8
Smaller classes than 73% of independent schools in New York
Merrick, NY2.4 mi
The Children's Learning Center
Special education school · Pre-K only
Serving families in Roosevelt since at least 2011
Roosevelt, NY2.6 mi