International School of Portland
Independent school · Grades Pre-K–5
Portland, OR
2305 S Water Ave, Portland, OR 97201
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
- One of the most diverse private schools in Oregon
- Serving families in Portland since at least 2011
International School of Portland is an independent private school in Portland, Oregon, for students from pre-K through 5th grade. It has about 290 students and around 8 students per teacher. It has been listed in official private school records since 2011–12. Students attend about 7.5 hours a day, 174 days a year.
At a glance
- Grades
- Grades Pre-K–5
- Students
- 290
- Teachers
- 36 (full-time equivalent)
- Students per teacher
- 8.1
- Boys and girls
- Coed · 141 girls, 149 boys
- Religious affiliation
- None (nonsectarian)
- School day
- About 7.5 hours
- School year
- 174 days
- Library
- Yes
Reviews
Be the first to share what you love about International School of Portland.
How it compares
- Larger than 95% of independent elementary schools in Oregon.
- Compared with 43 independent elementary schools in Oregon.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Member of
- National Association of Independent Schools
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 International School of Portland
What grades does International School of Portland serve?
International School of Portland serves grades Pre-K–5.
How many students attend International School of Portland?
About 290 students, with 8 students per teacher, according to official records.
How much is tuition at International School of Portland?
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
Bridges Middle School
Special education school · Grades 4–8
Growing: enrollment up 50% since 2011–12
Portland, OR0.1 mi
Cedarwood Waldorf School
Independent school · Grades Pre-K–8
Serving families in Portland since at least 2011
Portland, OR0.4 mi
St. Marys Academy
Independent Catholic school · Grades 9–12
The only all-girls school in Portland
Portland, OR0.5 mi
Portland Chinese School
Independent school · Grades K–10
Serving families in Portland since at least 2011
Portland, OR0.6 mi
Montessori Childrens House
Montessori school · Grades Pre-K–K
Smaller classes than 92% of preschools in Oregon
Portland, OR0.7 mi
L'etoile French Immersion School
Independent school · Grades K–5
Growing: enrollment up 121% since 2013–14
Portland, OR1.7 mi