St. Cassian Elementary School
Diocesan school · Grades Pre-K–8
Upper Montclair, NJ
190 Lorraine Ave, Upper Montclair, NJ 07043
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- AClass size
- A-Years serving families
- A+Diversity
What stands out
- Smaller classes than 82% of Catholic schools in New Jersey
- Growing: enrollment up 16% since 2011–12
- Serving families in Upper Montclair since at least 2011
St. Cassian Elementary School is a Catholic diocesan school in Upper Montclair, New Jersey, for students from pre-K through 8th grade. It has about 207 students and around 9 students per teacher, smaller classes than 82% of Catholic elementary schools in New Jersey. Enrollment has grown about 16% since 2011–12. The school is part of the Archdiocese of Newark. Students attend about 7 hours a day, 180 days a year.
At a glance
- Grades
- Grades Pre-K–8
- Students
- 207
- Teachers
- 22.4 (full-time equivalent)
- Students per teacher
- 9.2
- Boys and girls
- Coed · 108 girls, 99 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of Newark
- School day
- About 7 hours
- School year
- 180 days
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 82% of Catholic elementary schools in New Jersey (9 students per teacher).
- Larger than 59% of Catholic elementary schools in New Jersey.
- Compared with 120 Catholic elementary schools in New Jersey.
Students by survey year
Total students reported in official records since 2011–12.
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. Cassian Elementary School
What grades does St. Cassian Elementary School serve?
St. Cassian Elementary School serves grades Pre-K–8.
How many students attend St. Cassian Elementary School?
About 207 students, with 9 students per teacher, according to official records.
How much is tuition at St. Cassian Elementary School?
Call the school to ask about tuition, financial aid and payment plans.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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