St. Aidan Upper School
Parish school · Grades 3–8
Williston Park, NY
510 Willis Ave, Williston Park, NY 11596
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A+Class size
- B+Years serving families
- B+Diversity
What stands out
- Smaller classes than 92% of Catholic schools in New York
In Williston Park, New York, St. Aidan Upper School is a Catholic parish school for students from 3rd grade through 8th grade. About 166 students attend, with roughly 6 students per teacher, smaller classes than 92% of Catholic elementary schools in New York. The school is part of the Diocese of Rockville Centre. The school day runs about 6.5 hours, 177 days a year.
At a glance
- Grades
- Grades 3–8
- Students
- 166
- Teachers
- 28.1 (full-time equivalent)
- Students per teacher
- 5.9
- Boys and girls
- Coed · 33 girls, 133 boys
- Religious affiliation
- Catholic · Parish school
- Diocese
- Diocese of Rockville Centre
- School day
- About 6.5 hours
- School year
- 177 days
- Library
- Yes
Reviews
Be the first to share what you love about St. Aidan Upper School.
How it compares
- Smaller classes than 92% of Catholic elementary schools in New York (6 students per teacher).
- Larger than 50% of Catholic elementary schools in New York.
- Compared with 242 Catholic elementary schools in New York.
Students by survey year
Total students reported in official records since 2017–18.
Students by grade
Student body
Member of
- National Catholic Educational 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 St. Aidan Upper School
What grades does St. Aidan Upper School serve?
St. Aidan Upper School serves grades 3–8.
How many students attend St. Aidan Upper School?
About 166 students, with 6 students per teacher, according to official records.
How much is tuition at St. Aidan Upper 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
Schechter School of Long Island
Jewish day school · Grades K–12
Smaller classes than 94% of Jewish day schools in New York
Williston Park, NY0.1 mi
Notre Dame School
Diocesan school · Grades Pre-K–8
Serving families in New Hyde Park since at least 2011
New Hyde Park, NY2.2 mi
Our Lady of Grace Montessori School
Independent Catholic school · Grades Pre-K–3
The smallest classes of any Catholic school in Manhasset
Manhasset, NY2.6 mi
St. Brigid/Our Lady of Hope Regional School
Diocesan school · Grades Pre-K–8
The only Catholic school in Westbury
Westbury, NY2.7 mi
Sco Family Services - Westbrook Prep School
Special education school · Grades 10–12
The only special education school in Westbury
Westbury, NY2.7 mi
The Waldorf School of Garden City
Independent school · Grades Pre-K–12
100% of graduates go to four-year colleges
Garden City, NY2.8 mi