Our Lady of Mercy School
Diocesan school · Grades Pre-K–8
Potomac, MD
9222 Kentsdale Dr, Potomac, MD 20854
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A+Class size
- A-Years serving families
- A+Diversity
What stands out
- The only Catholic school in Potomac
- Smaller classes than 91% of Catholic schools in Maryland
- Serving families in Potomac since at least 2011
Our Lady of Mercy School is a Catholic diocesan school in Potomac, Maryland, for students from pre-K through 8th grade. It has about 182 students and around 8 students per teacher, smaller classes than 91% of Catholic elementary schools in Maryland. It has been listed in official private school records since 2011–12. The school is part of the Archdiocese of Washington. Students attend about 7 hours a day, 180 days a year. Maryland has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades Pre-K–8
- Students
- 182
- Teachers
- 24.1 (full-time equivalent)
- Students per teacher
- 7.6
- Boys and girls
- Coed · 94 girls, 88 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of Washington
- School day
- About 7 hours
- School year
- 180 days
- Library
- Yes
Reviews
Be the first to share what you love about Our Lady of Mercy School.
How it compares
- Smaller classes than 91% of Catholic elementary schools in Maryland (8 students per teacher).
- A smaller school: fewer students than 77% of Catholic elementary schools in Maryland.
- Compared with 93 Catholic elementary schools in Maryland.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Catholic Educational Association
Help paying tuition in Maryland
These state programs can help pay private school tuition. Only participating schools can accept them, so ask Our Lady of Mercy School whether it takes part.
- BOOST Scholarship Program · Voucher or scholarship
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 Our Lady of Mercy School
What grades does Our Lady of Mercy School serve?
Our Lady of Mercy School serves grades Pre-K–8.
How many students attend Our Lady of Mercy School?
About 182 students, with 8 students per teacher, according to official records.
How much is tuition at Our Lady of Mercy School?
Call the school to ask about tuition, financial aid and payment plans. Maryland has programs that can help pay private school tuition; ask whether the school takes part.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
Other private schools nearby
German International School Washington DC
Independent school · Grades Pre-K–12
Serving families in Potomac since at least 2011
Potomac, MD0.2 mi
Norwood School
Independent school · Grades Pre-K–8
Smaller classes than 62% of independent schools in Maryland
Bethesda, MD0.5 mi
Connelly School of the Holy Child
Religious school · Grades 6–12
The only all-girls school in Potomac
Potomac, MD0.9 mi
Georgetown Hill Potomac Village
Early childhood program · Grades Pre-K–K
The smallest classes of any preschool in Potomac
Potomac, MD1.9 mi
The Woods Academy
Independent Catholic school · Grades Pre-K–8
Smaller classes than 92% of Catholic schools in Maryland
Bethesda, MD1.9 mi
Bullis School
Independent school · Grades K–12
One of the 3 largest independent schools in Maryland
Potomac, MD1.9 mi