Guidepost Montessori at Mill Valley
270 Miller Ave, Mill Valley, CA
We are a directory, not the daycare. We cannot hold a spot, enroll a child or answer questions about care.
Own this daycare? Claim itAbout
Marin Horizon School is a licensed child care center in Mill Valley, California. The state has licensed it since June 29, 1992, for up to 110 children.
It describes its programs: preschool and toddler care. It lists yearly tuition from $26,073 to $38,456.
California Department of Social Services, Community Care Licensing Division lists 4 visits since Jun 2022, with 0 Type A and 1 Type B citation.
Hours
Programs
| Ages | 2-5 |
|---|---|
| Programs | Preschool and toddler care |
| More | Founded 1977 |
| Licensed capacity | 110 childrenFrom the state license |
Cost
Marin Horizon School lists yearly tuition from $26,073 to $38,456. For comparison, full-time infant care at a child care center in Marin County has a median price of $548 a week (U.S. Department of Labor, 2022).
| Yearly · program, in its own words | Price |
|---|---|
| Primary Program, 4 days | $37,098 |
| Primary Program, 5 days | $38,456 |
| Toddler Program, 3 mornings | $26,073 |
| Toddler Program, 4 mornings | $27,619 |
| Toddler Program, 5 mornings | $30,336 |
State record
California Department of Social Services, Community Care Licensing Division lists 4 visits to Marin Horizon School since Jun 2022. Its published counts show 0 Type A and 1 Type B citation across those visits.
4 visits since Jun 2022 · Last visit Oct 15, 2025
Type A citations 0 · Type B citations 1, as the state counts them
A cited rule is what an inspector found on the day of a visit. It is not a rating of the daycare today.
Own this daycare? Add your response to the state record
Reviews
If your child goes or went here, your review helps other parents. We check every review against our review guidelines.
270 Miller Ave, Mill Valley, CA
1100 Fifth Avenue, San Rafael, CA
360 East Blithdale Avenue, Mill Valley, CA
Larkspur, CA 94939 · Home daycare: the provider shares the address with families
285 Miller Avenue, Mill Valley, CA
247 Miller Avenue, Mill Valley, CA
10 Olive Street, Mill Valley, CA
410 Sycamore Avenue, Mill Valley, CA
10 Old Mill Street, Mill Valley, CA
FAQ
Yes. California Department of Social Services, Community Care Licensing Division lists it as licensed and operating, first licensed June 29, 1992.
California Department of Social Services, Community Care Licensing Division lists 4 visits to Marin Horizon School since Jun 2022. Its published counts show 0 Type A and 1 Type B citation across those visits.
110, the licensed capacity on the state record.
Its hours are not listed. Call (415) 388-8408 to confirm.
Yearly tuition from $26,073 to $38,456, as it lists it.
(415) 388-8408.
305 Montford Avenue, Mill Valley, CA 94941. The nearest other daycare we list is Guidepost Montessori at Mill Valley, 0.3 miles away.