O'Dea High School
Diocesan school · Grades 9–12
Seattle, WA
802 Terry Ave, Seattle, WA 98104
Overall grade: B
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B-Class size
- A-College-going
- B+Years serving families
- A+Diversity
What stands out
- 87% of graduates go to four-year colleges
- Serving families in Seattle since at least 2011
In Seattle, Washington, O'Dea High School is a Catholic diocesan school for students from 9th grade through 12th grade. About 461 students attend, with roughly 14 students per teacher. Enrollment is up about 10% since 2011–12. The school is an all-boys school and is part of the Archdiocese of Seattle. The school reports that about 87% of its graduates go on to four-year colleges. The school day runs about 6.5 hours, 180 days a year.
At a glance
- Grades
- Grades 9–12
- Students
- 461
- Teachers
- 32 (full-time equivalent)
- Students per teacher
- 14.4
- Boys and girls
- All boys
- Religious affiliation
- Catholic · Diocesan school
- Diocese
- Archdiocese of Seattle
- School day
- About 6.5 hours
- School year
- 180 days
- Graduates going to 4-year colleges
- About 87% (the school's estimate for the class before the survey)
Reviews
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How it compares
- Larger than 57% of Catholic high schools in Washington.
- Compared with 14 Catholic high schools in Washington.
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 O'Dea High School
What grades does O'Dea High School serve?
O'Dea High School serves grades 9–12.
How many students attend O'Dea High School?
About 461 students, with 14 students per teacher, according to official records.
How much is tuition at O'Dea High 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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