Marin Horizon School

  • Our mission at Marin Horizon School is to challenge students to be self-reliant thinkers and lifelong learners.
  • Through our Montessori-inspired, integrated and multi-cultural curriculum, we inspire academic excellence, nurture students' natural love of learning, and encourage them to be confident individuals who are responsible to each other, the community, and the world.
  • We are located on two acres of land in Mill Valley, California, in a safe and friendly residential neighborhood in the redwoods of Mt. Tamalpais.
  • We serve families from towns and cities throughout Marin County, San Francisco, and the North and East Bay areas.

Top Placements

Marin Horizon School places among the top 20% of private schools in California for:

School Overview

School Membership(s)School Assoc.National Association of Independent Schools (NAIS)
State or regional independent school association
Religious AffiliationNonsectarian
Grades OfferedGrades Prekindergarten-8
ADD/ADHD SupportYes
Learning Difference ProgramsYes
Learning Programs SupportedMild to Moderate Learning Differences
Year Founded1977
Summer School OfferedYes
Summer Program DetailsLink to Summer Program Details

Student Body

Total Students305 students
Student Body TypeCo-ed
% Students of Color
State avg.: 44%
Students by GradeMarin Horizon School Student By Grade

Academics and Faculty

Total Classroom Teachers39 teachers
Student : Teacher Ratio8:1
National avg.: 13:1
% Faculty w/Advanced Degree
Average Class Size25 students
List of Courses OfferedLink to List of Courses
Classroom Dress CodeCasual

Finances and Admission

Admission DeadlineJan. 13 / rolling
Tuition NotesTuition varies by grade. Please visit our website for details.
% on Financial Aid
Average Financial Aid Grant$12,990
Admissions DirectorAlia Long


Total Sports Offered5 sports
SportsBasketball, Cross Country, Flag Football, Golf, Track and FieldBasketballCross Country,
Flag FootballGolf,
Track and Field


Total ExtracurricularsTotal Extra-curric.10 extracurriculars
ExtracurricularsExtra-curric.Capoeira, Chess, Cooking, Dance, Guitar, Gymnastics, Lego Engineering

Club or Organization:
Student Council

Arts and Music Programs:
Drama, Visual Art

School Notes

  • Montessori-inspired, student-centered, experiential learning
  • Integrated and inter-disciplinary curriculum with a multicultural and global focus
  • Spiral curriculum introduces advanced topics at early ages
  • Spanish classes, Kindergarten through 8th grade
  • Integrated Technology curriculum with high iPad and computer-to-student ratios 
  • Media Literacy Program
  • Artist-in-Residence Program
  • Music and performing arts program, including 4 major performances a year
  • Outdoor Education camp, 1st through 8th grades
  • Leadership Development, K through 8th grades
  • Strong emphasis on writing, public speaking, time-management, conflict resolution and research skills
  • High school placement counseling and SSAT test preparation
  • Self and peer assessment promote independence and critical thinking

Profile last updated:

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  • School Location Miles Grades Students
  • Mill Valley
    Grades: K-8 | 217 students
    0.8 miles
    100 Harvard Ave
    Mill Valley, CA 94941
    0.8 K-8
  • Larkspur
    Grades: NS-8 | 359 students
    2.3 miles
    20 Magnolia Avenue
    Larkspur, CA 94939
    2.3 NS-8
  • Corte Madera
    Grades: K-8 | 590 students
    3.2 miles
    5221 Paradise Drive
    Corte Madera, CA 94925
    3.2 K-8
  • Corte Madera
    Marin Montessori School
    Marin Montessori School Photo - Corte Madera Campus
    Montessori School
    Grades: PK-9 | 276 students
    3.3 miles
    5200 Paradise Drive
    Corte Madera, CA 94925
    3.3 PK-9
  • Mill Valley
    Greenwood School
    Greenwood School Photo - Beginning in 1st Grade, children participate in a yearly class play that grows more sophisticated as the students mature.
    Special Program Emphasis
    Grades: PK-8 | 134 students
    0.7 miles
    17 Buena Vista Ave
    Mill Valley, CA 94941
    0.7 PK-8

School Reviews

  5.00 out of 5  (2 reviews)
Humanity is not thinking less of yourself but thinking of yourself less. Combining age appropriate philosophy, logic, moral education, and community service might add up an education in being a humanitarian. Or you could send a child to Marin Horizon and watch them grock it and rock it. Let`s all rock our humanity!
- Posted by
The third grade was our first year, then fourth, and now fifth. When we moved to the area from the East Coast and shortly thereafter started school, we arrived to some school events a bit after they had started. Around the third time running late, I sighed to a parent, "We're the late family," to which he replied with a smile, "So, are we going to start labeling, now?" The wisdom in his warmth signaled to me that we were in a special place. Since then, I have grown used to a parent mentioning non-violent communication (also known as compassionate communication) or hearing a teacher-lecturer speak of labeling the behavior, not the child. The school seems to strike a common-sensical balance in so many realms (work/play; being little/growing up; independence/interdependence; events/breaks; strict education/social opportunities), and, in this busy world, our Marin Horizon students have taught us some practical mindfulness techniques. I get such a good sense and have a solid feeling of trust, having spent many a morning or an afternoon and having met most everyone, by now. The teachers are conversant in the whole child, even to the degree of keeping up with technology trends of Eighth Graders... and even to the degree of knowing that the whole child can be nurtured in the midst of family and community and found in broader community.Our child had been labeled (gifted- "twice exceptional") and we had labeled ourselves (privileged-"wage slaves").Yet no one had given us any concrete means of how, through school community, to use these products. Marin Horizon gave us that, also! I'd say it "upgraded" us or "evolved" us as a family and as conscious and engaged citizen-neighbors. I have to admit, I am very proud to be a Marin Horizon parent!
- Posted by

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Did You Know?
The average private school tuition in California is $11,005 for elementary schools and $18,861 for high schools (read more about average private school tuition across the country).
The average acceptance rate in California is 84% (read more about average acceptance rates across the country).