Bishop Denis J. Oconnell High School
Diocesan school · Grades 9–12
Arlington, VA
6600 Little Falls Rd, Arlington, VA 22213
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A-Class size
- ACollege-going
- BYears serving families
- ADiversity
What stands out
- One of the 3 largest Catholic schools in Virginia
- The largest Catholic school in Arlington
- 99% of graduates go to four-year colleges
- Smaller classes than 60% of Catholic schools in Virginia
In Arlington, Virginia, Bishop Denis J. Oconnell High School is a Catholic diocesan school for students from 9th grade through 12th grade. About 1,155 students attend, with roughly 10 students per teacher, smaller classes than 60% of Catholic high schools in Virginia. Its enrollment has held steady since 2019–20. The school is part of the Diocese of Arlington. The school reports that about 99% of its graduates go on to four-year colleges. The school day runs about 7 hours, 180 days a year. Virginia has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades 9–12
- Students
- 1,155
- Teachers
- 121 (full-time equivalent)
- Students per teacher
- 9.5
- Boys and girls
- Coed · 584 girls, 571 boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Diocese of Arlington
- School day
- About 7 hours
- School year
- 180 days
- Graduates going to 4-year colleges
- About 99% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 60% of Catholic high schools in Virginia (10 students per teacher).
- Larger than 80% of Catholic high schools in Virginia.
- Compared with 10 Catholic high schools in Virginia.
Students by survey year
Total students reported in official records since 2019–20.
Students by grade
Student body
Member of
- National Catholic Educational Association
Help paying tuition in Virginia
These state programs can help pay private school tuition. Only participating schools can accept them, so ask Bishop Denis J. Oconnell High School whether it takes part.
- Education Improvement Scholarships Tax Credit · Tax-credit 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 Bishop Denis J. Oconnell High School
What grades does Bishop Denis J. Oconnell High School serve?
Bishop Denis J. Oconnell High School serves grades 9–12.
How many students attend Bishop Denis J. Oconnell High School?
About 1,155 students, with 10 students per teacher, according to official records.
How much is tuition at Bishop Denis J. Oconnell High School?
Call the school to ask about tuition, financial aid and payment plans. Virginia 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
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