Millbrook School
Independent school · Grades 9–12
Millbrook, NY
131 Millbrook School Rd, Millbrook, NY 12545
Overall grade: B+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- BClass size
- ACollege-going
- A-Years serving families
- A-Diversity
What stands out
- 95% of graduates go to four-year colleges
- Growing: enrollment up 22% since 2011–12
- Small classes: about 8 students per teacher
- Serving families in Millbrook since at least 2011
Millbrook School is an independent private school in Millbrook, New York, for students from 9th grade through 12th grade. It has about 330 students and around 8 students per teacher. Enrollment has grown about 22% since 2011–12. The school reports that about 95% of its graduates go on to four-year colleges. Students attend about 7 hours a day, 165 days a year.
At a glance
- Grades
- Grades 9–12
- Students
- 330
- Teachers
- 41.4 (full-time equivalent)
- Students per teacher
- 8
- Boys and girls
- Coed · 167 girls, 163 boys
- Religious affiliation
- None (nonsectarian)
- School day
- About 7 hours
- School year
- 165 days
- Graduates going to 4-year colleges
- About 95% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Larger than 87% of independent high schools in New York.
- Compared with 15 independent high schools in New York.
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
- The Association of Boarding 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 Millbrook School
What grades does Millbrook School serve?
Millbrook School serves grades 9–12.
How many students attend Millbrook School?
About 330 students, with 8 students per teacher, according to official records.
How much is tuition at Millbrook 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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