Best Uniondale Private Schools (2026)

For the 2026 school year, there are 4 private schools serving 3,480 students in Uniondale, NY (there are 7 public schools, serving 6,610 public students). 34% of all K-12 students in Uniondale, NY are educated in private schools (compared to the NY state average of 15%).
The top-ranked private schools in Uniondale, NY include Hanc - Middle & High School, Kellenberg Memorial High School, and St. Martin De Porres Marianist School.
75% of private schools in Uniondale, NY are religiously affiliated (most commonly Catholic and Other).

Top-Ranked Uniondale Private Schools (2026)

School
Location
Quick Facts
Hanc - Middle & High School
(Jewish)
215 Oak St
Uniondale, NY 11553
(516) 538-8161
Gr: 7-12 | 463 students
Kellenberg Memorial High School
(Catholic)
(1)
1400 Glenn Curtiss Blvd
Uniondale, NY 11553
(516) 292-0200
Gr: 6-12 | 2,512 students Avg. class size: 20 students Tuition listed
530 Hempstead Blvd
Uniondale, NY 11553
(516) 481-3303
Gr: PK-8 | 364 students
705 Nassau Road
Uniondale, NY 11553
(516) 486-7887
Gr: NS-6 | 141 students

Overview

This Town (Uniondale)
This State (NY)
# Schools
4 Schools

Student Body:

# Students
3,480 Students
429,337 Students
% Average Students of Color
22%
40%

Academics and Faculty:

# Teachers
232 Teachers
41,894 Teachers
Average Student-Teacher Ratio
15:1
10:1
% Average Faculty w/Advanced Degree
10%
76%
Average Class Size
20 students
15 students
Average Number of AP Courses
20 courses
11 courses

Tuition and Acceptance Rate:

Average Yearly Tuition Cost
$20,000
$22,391
Average Endowment Size
$10 million
$44.35 million

Students by Ethnicity:

0.42
0.60
# American Indian Students
3 Students
949 Students
% American Indian Students
n/a
n/a
# Asian Students
36 Students
18,401 Students
% Asian Students
1%
4%
# Hispanic Students
283 Students
33,760 Students
% Hispanic Students
9%
8%
# Black Students
274 Students
33,699 Students
% Black Students
9%
8%
# White Students
2,344 Students
253,806 Students
% White Students
75%
59%
# Hawaiian Students
20 Students
2,694 Students
% Hawaiian Students
1%
1%
# Two or more races Students
n/a
n/a
% of Two or more races Students
n/a
n/a
# Others Students
156 Students
83,934 Students
% of Others Students
5%
20%
All Ethnic Groups

Extracurriculars and Sports:

Frequently Asked Questions

What are the top-ranked private schools in Uniondale, NY?
The top-ranked private schools in Uniondale, NY include Hanc - Middle & High School, Kellenberg Memorial High School, and St. Martin De Porres Marianist School.
How many private schools are located in Uniondale?
4 private schools are located in Uniondale.
What percentage of students in Uniondale go to private school?
34% of all K-12 students in Uniondale are educated in private schools (compared to the NY state average of 15%).
What percentage of private schools are religiously affiliated in Uniondale?
75% of private schools in Uniondale are religiously affiliated (most commonly Catholic and Other).

Recent Articles

Summer Learning Loss Prevention Strategies for Families
Summer Learning Loss Prevention Strategies for Families
Learn how high-performing families prevent summer learning loss with smart routines, reading plans, enrichment, and balanced schedules.
Study Skills Every Private School Student Should Master
Study Skills Every Private School Student Should Master
Discover the essential study skills private school students should master by age 12 to build confidence, organization, and long-term academic success.
Benefits of Montessori Private Schools in 2026
Benefits of Montessori Private Schools in 2026
Explore the benefits of Montessori private schools, including independence, personalized learning, and long-term academic growth.