Average
#696 of 1,787 private schools in CA
Top 39% of private schools
Mark Day School
Elementary School
39 TRELLIS DR, San Rafael, CA 94903
Enrollment
392
Student-Teacher
9.6:1
Score
6.6
Grades
Kindergarten – 8th
Enrollment
392
Student-Teacher
9.6:1
Score
6.6
Grades
Kindergarten – 8th
Data vintage
2021-22
Data vintage2021-22
How this school compares
California private schools
#696 of 1,787
In San Rafael
#5 of 6
public schools
Shortlisting around Mark Day School?
Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Mark Day School
Elementary School in San Rafael · grades Kindergarten – 8th. Start here, then compare fit against nearby and district options.
Saint Isabella School
0.2 mi away. Use as a geographic alternative in the same move search.
Vallecito Elementary
0.2 mi away. Use as a geographic alternative in the same move search.
About Mark Day School
Mark Day School is a private elementary school in San Rafael, CA. Mark Day School serves approximately 392 students, and covers grades Kindergarten-8th, and has a 9.6:1 student-teacher ratio. Mark Day School has a current MySchoolScout rating of 6.6 out of 10 and ranks #696 of 1,787 private schools in CA.
- This school 6.6 · Average
- CA avg 6.2
What Parents Should Know
At 9.6:1 students to teachers, Mark Day School sits well below the national average. Smaller classes like that usually mean more one-on-one time between students and teachers.
Mark Day School is private, so it runs independently of the local district and sets its own curriculum. That freedom cuts both ways depending on what you want for your child. If you're considering it, start with the practical questions: tuition, financial aid, and how admissions work.
Compare to Public Schools
BetaHow Mark Day School compares to 15 public schools serving similar grades in San Rafael, CA
Student Demographics
Nearby Elementary Schools
| School | Rating |
|---|---|
| Mark Day School (this school) | 6.6 |
| Vallecito Elementary | 7.4 |
| Marin's Community | 4.4 |
| Marin County Special Education | 4.1 |
| Sun Valley Elementary | 8.2 |
| Marin County Juvenile Court | — |
| Miller Creek Middle | 7.4 |
| Venetia Valley K-8 | 4.8 |
| Lucas Valley Elementary | 7.0 |
| Mary E. Silveira Elementary | 5.8 |
| Coleman Elementary | 5.2 |
| James B. Davidson Middle | 7.1 |
| Laurel Dell Elementary | 7.8 |
| San Pedro Elementary | 3.6 |
| Bahia Vista Elementary | 4.2 |
| Glenwood Elementary | 7.3 |
Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.
Score Breakdown
PreliminaryWhat This Rating Measures
This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in CA.
Data Unavailable
View data sources
Score basis: Private school model
Data coverage: 80% of scoring components had data
Components scored: 4 of 5
Ranking pool: Private schools in CA
Test Scores
Test score data not yet available for this school.
Student Demographics NCES PSS (SY 2021-22)
Source: NCES Private School Survey (PSS)
Location
39 TRELLIS DR, San Rafael, CA 94903
Nearby Alternatives
Families considering Mark Day School may also want to explore other elementary schools in the area. Hidden Valley Elementary (rated 9.1/10, 1.0 miles away, in nearby San Anselmo), which scores notably higher. Another option is Sun Valley Elementary (rated 8.2/10, 1.5 miles away), which scores notably higher. Additionally, Vallecito Elementary (rated 7.4/10, 0.2 miles away), which scores slightly higher. For more schools in San Rafael, see our San Rafael schools guide .
Nearby Schools
20 within 1.7 mi| School | Distance | Rating |
|---|---|---|
| Mark Day School San Rafael | 0.0 mi | — |
| Saint Isabella School San Rafael | 0.2 mi | — |
| Vallecito Elementary San Rafael | 0.2 mi | 7.4 |
| Terra Linda High San Rafael | 0.5 mi | 7.7 |
| Montessori de Terra Linda San Rafael | 0.5 mi | — |
| Phoenix Academy San Rafael | 0.5 mi | — |
| Marin County Special Education San Rafael | 0.5 mi | 4.1 |
| Marin's Community San Rafael | 0.5 mi | 4.4 |
| BOOST of Cypress School San Rafael | 1.0 mi | — |
| ICE CREAM & SHOE PRESCHOOL & KINDERGARTEN INC. San Rafael | 1.0 mi | — |
| Hidden Valley Elementary San Anselmo | 1.0 mi | 9.1 |
| Fusion Academy Marin San Rafael | 1.1 mi | — |
| FUSION ACADEMY MARIN San Rafael | 1.2 mi | — |
| Marin Waldorf School San Rafael | 1.4 mi | — |
| STAR ACADEMY San Rafael | 1.3 mi | 7.1 |
| MARIN WALDORF SCHOOL San Rafael | 1.5 mi | 7.4 |
| Sun Valley Elementary San Rafael | 1.5 mi | 8.2 |
| Marin County Juvenile Court San Rafael | 1.6 mi | — |
| Miller Creek Middle San Rafael | 1.7 mi | 7.4 |
| Irene M. Hunt School / Side by Side San Anselmo | 1.7 mi | — |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 94903 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$127,464
Median Home Value
$1,149,400
Median Rent
$3,026/mo
Population
31,135
College Educated
55.1%
Homeownership
65.5%
Avg Commute
28 min
Poverty Rate
7.6%
Median Age
48.7
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| ANNELIESE SCHOOLS, INC. Laguna Beach, CA | 6.6 |
| Adams Elementary San Diego, CA | 6.6 |
| Aldama Elementary Los Angeles, CA | 6.6 |
| Allen Avenue Elementary San Dimas, CA | 6.6 |
| Altadena Elementary Altadena, CA | 6.6 |
| Anderson (Linford L.) Elementary Dixon, CA | 6.6 |
Frequently Asked Questions
Common questions about Mark Day School
What grades does Mark Day School serve?
Mark Day School serves students in grades Kindergarten through 8th.
How many students attend Mark Day School?
Mark Day School has an enrollment of approximately 392 students.
What is the student-teacher ratio at Mark Day School?
The student-teacher ratio at Mark Day School is 9.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.
How does Mark Day School rank in CA?
Mark Day School ranks #696 of 1,787 private schools in CA.
What is Mark Day School's MySchoolScout rating?
Mark Day School has a current MySchoolScout rating of 6.6 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
Is Mark Day School a private school?
Yes, Mark Day School is a private coeducational school with a Nonsectarian affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.
Is Mark Day School a religious school?
No, Mark Day School is a nonsectarian (non-religious) private school.
Neighborhood Context
Powered by 
Quick Facts NCES PSS (SY 2021-22)
- Grades
- Kindergarten – 8th
- Enrollment
- 392
- Gender Split
- 50% M / 50% F
- Student-Teacher Ratio
- 9.6:1
- Teachers (FTE)
- 41
- Type
- private
- Coed Status
- coed
- Affiliation
- Nonsectarian
- School Day
- 7 hours
- Days Per Year
- 166 days
- Setting
- Small City
- County
- Marin County
- Phone
- (415) 472-8000
Resources & Links
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateRelated reading
- Best Elementary Schools in America: 2026 Rankingsbest schools
- Best Public Schools in California 2026: Top-Ranked Elementary, Middle & High Schoolsbest schools
- Best School Districts to Move To in 2026: A Data-Driven Guidebest schools
- Best Schools in Los Angeles, CA — 2026 Rankingsbest schools
- Best Schools in San Diego, CA — 2026 Rankingsbest schools
Get school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.