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Marin Horizon School

Private, Nonsectarian Grades PK, KG-8

285

Students ?

6.9

Student/teacher ratio ?

305 Montford Ave
Mill Valley, CA 94941

(415) 388-8408

Racial breakdown:

White:

43.9%

Not Specified:

37.9%

Two or more races:

8.1%

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Schools Near Marin Horizon School

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Ranking:

E Elementary M Middle H High A Alternative P Private

School	Students/Teachers	Per Pupil Expenditures (2025)
Marin Horizon School	Private, Nonsectarian	PK, KG-8	305 Montford Ave	Mill Valley	94941	Marin County	(415) 388-8408	285	25	6.9	125 (43.9%)	9 (3.2%)	10 (3.5%)	10 (3.5%)	0 (0.0%)	0 (0.0%)	23 (8.1%)
Guidepost Montessori Mill Valley	Private, Nonsectarian	PK-K	271 Miller Ave	Mill Valley	94941	Marin County	(628) 215-1881
Greenwood School	Private, Nonsectarian	PK, KG-8	17 Buena Vista Ave	Mill Valley	94941	Marin County	(415) 388-0495
North Bridge Academy	Private, Nonsectarian	2-8	17 Buena Vista Ave	Mill Valley	94941	Marin County	(415) 462-5657	82	21	4.0	70 (85.4%)	1 (1.2%)	6 (7.3%)	3 (3.7%)	0 (0.0%)	0 (0.0%)	2 (2.4%)
Mount Tamalpais School	Private, Nonsectarian	K-8	100 Harvard Ave	Mill Valley	94941	Marin County	(415) 383-9434	254	39	6.5	177 (69.7%)	9 (3.5%)	10 (3.9%)	7 (2.8%)	0 (0.0%)	0 (0.0%)	51 (20.1%)
Terra Marin School	Private, Nonsectarian	PK, KG-8	70 Lomita Dr	Mill Valley	94941	Marin County	(415) 906-2220	86	20	2.9	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Ring Mountain Day School	Private, Nonsectarian	K-8	70 Lomita Dr	Mill Valley	94941	Marin County	(415) 381-8183
Marin Primary & Middle School	Private, Nonsectarian	PK, KG-8	20 Magnolia Ave	Larkspur	94939	Marin County	(415) 413-9048	291	40	4.9	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Chronos Academy	Private, Nonsectarian	1-8	110 Magnolia Ave	Larkspur	94939	Marin County	(415) 383-2283	18	4	4.6	14 (77.8%)	2 (11.1%)	0 (0.0%)	2 (11.1%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Corte Madera Montessori	Private, Nonsectarian	PK-K	50 El Camino Dr Ste 10	Corte Madera	94925	Marin County	(415) 927-0919	52			0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)

Frequently Asked Questions about Marin Horizon School

How many students attend Marin Horizon School?

In the 2023-24 school year, 285 students attended Marin Horizon School.

What is the racial makeup of Marin Horizon School?

Students at Marin Horizon School are 44% White, 38% Not Specified, 8% Two or more races, 4% Asian, 4% Hispanic, 3% African American.

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Latest California data All new data »

2024–25 school spending dataJul 1, 2026

2024–25 attendance dataMar 13, 2026

2024–25 CSA Spanish test scoresDec 22, 2025

2024–25 dropout rates & graduation ratesNov 14, 2025

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

Diagnostics

School								Students/Teachers											Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Total
Marin Horizon School	Private, Nonsectarian	PK, KG-8	305 Montford Ave	Mill Valley	94941	Marin County	(415) 388-8408	285	25	6.9		125 (43.9%)	9 (3.2%)	10 (3.5%)	10 (3.5%)	0 (0.0%)	0 (0.0%)	23 (8.1%)
Guidepost Montessori Mill Valley	Private, Nonsectarian	PK-K	271 Miller Ave	Mill Valley	94941	Marin County	(628) 215-1881
Greenwood School	Private, Nonsectarian	PK, KG-8	17 Buena Vista Ave	Mill Valley	94941	Marin County	(415) 388-0495
North Bridge Academy	Private, Nonsectarian	2-8	17 Buena Vista Ave	Mill Valley	94941	Marin County	(415) 462-5657	82	21	4.0		70 (85.4%)	1 (1.2%)	6 (7.3%)	3 (3.7%)	0 (0.0%)	0 (0.0%)	2 (2.4%)
Mount Tamalpais School	Private, Nonsectarian	K-8	100 Harvard Ave	Mill Valley	94941	Marin County	(415) 383-9434	254	39	6.5		177 (69.7%)	9 (3.5%)	10 (3.9%)	7 (2.8%)	0 (0.0%)	0 (0.0%)	51 (20.1%)
Terra Marin School	Private, Nonsectarian	PK, KG-8	70 Lomita Dr	Mill Valley	94941	Marin County	(415) 906-2220	86	20	2.9		0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Ring Mountain Day School	Private, Nonsectarian	K-8	70 Lomita Dr	Mill Valley	94941	Marin County	(415) 381-8183
Marin Primary & Middle School	Private, Nonsectarian	PK, KG-8	20 Magnolia Ave	Larkspur	94939	Marin County	(415) 413-9048	291	40	4.9		0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Chronos Academy	Private, Nonsectarian	1-8	110 Magnolia Ave	Larkspur	94939	Marin County	(415) 383-2283	18	4	4.6		14 (77.8%)	2 (11.1%)	0 (0.0%)	2 (11.1%)	0 (0.0%)	0 (0.0%)	0 (0.0%)
Corte Madera Montessori	Private, Nonsectarian	PK-K	50 El Camino Dr Ste 10	Corte Madera	94925	Marin County	(415) 927-0919	52				0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)	0 (0.0%)