Cornerstone Montessori School
Montessori school · Grades Pre-K–4
Washington Township, NJ
697 Delsea Dr, Washington Township, NJ 08071
Overall grade: A
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A+Class size
- BYears serving families
What stands out
- Smaller classes than 92% of Montessori schools in New Jersey
Cornerstone Montessori School is a Montessori school in Washington Township, New Jersey, for students from pre-K through 4th grade. It has about 12 students and around 2 students per teacher, smaller classes than 92% of Montessori elementary schools in New Jersey. Enrollment has grown about 140% since 2017–18. Students attend about 7 hours a day, 190 days a year.
At a glance
- Grades
- Grades Pre-K–4
- Students
- 12
- Teachers
- 5.8 (full-time equivalent)
- Students per teacher
- 2.1
- Boys and girls
- Coed · 6 girls, 6 boys
- Religious affiliation
- None (nonsectarian)
- Program
- Montessori
- School day
- About 7 hours
- School year
- 190 days
Reviews
Be the first to share what you love about Cornerstone Montessori School.
How it compares
- Smaller classes than 92% of Montessori elementary schools in New Jersey (2 students per teacher).
- A smaller school: fewer students than 92% of Montessori elementary schools in New Jersey.
- Compared with 39 Montessori elementary schools in New Jersey.
Students by survey year
Total students reported in official records since 2017–18.
Students by grade
Student body
Member of
- American Montessori Society
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 Cornerstone Montessori School
What grades does Cornerstone Montessori School serve?
Cornerstone Montessori School serves grades Pre-K–4.
How many students attend Cornerstone Montessori School?
About 12 students, with 2 students per teacher, according to official records.
How much is tuition at Cornerstone Montessori 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
Hollydell School
Special education school · Grades Pre-K–12
The only special education school in Sewell
Sewell, NJ0.6 mi
Ambassador Christian Academy
Pentecostal school · Grades K–8
Smaller classes than 68% of Christian schools in New Jersey
Sewell, NJ1.1 mi
Gloucester County Christian School
Christian school (nondenominational) · Grades Pre-K–12
Growing: enrollment up 15% since 2017–18
Sewell, NJ2.5 mi
Our Lady of Hope Regional School
Diocesan school · Grades Pre-K–8
A Catholic school in Blackwood
Blackwood, NJ4.6 mi
Bethany Baptist Christian School
Baptist school · Grades 4–11
Serving families in Deptford since at least 2011
Deptford, NJ4.9 mi
St. Michael the Archangel Regional School
Diocesan school · Grades Pre-K–8
Serving families in Clayton since at least 2011
Clayton, NJ5.3 mi