St. Marks School - Altadena

Saint Mark`s School is an independent, coeducational Episcopal school that has been serving students in preschool through grade six since 1960.
Currently located on the park-like campus of EF Academy in Pasadena while we rebuilt our home campus in Altadena.
We believe that the social and emotional development of our students is equally important to their intellectual growth.
Our holistic and relational approach to early childhood and elementary education allows a supportive and safe space for students to engage in their learning.

Quick Facts (2025-26)

  • Grades: Prekindergarten-6
  • Enrollment: 246 students
  • Yearly Tuition: $27,000
  • Average class size: 20 students
  • Application Deadline: None / Rolling
  • Source: Verified school update

Top Rankings

St. Marks School - Altadena ranks among the top 20% of private schools in California for:

Category
Attribute
School Resources

School Overview

Religious Affiliation
Grades Offered
Grades Prekindergarten-6
Year Founded
1960
Summer School Offered
Yes
Summer Program Details
School Calendar

Student Body

Total Students
246 students
Student Body Type
Co-ed
% Students of Color
44%
State avg.: 51%
Students by Grade
St. Marks School - Altadena Student By Grade

Academics and Faculty

Total Classroom Teachers
22 teachers
Student-Teacher Ratio
11:1
National avg.: 13:1
Average Class Size
20 students
Classroom Dress Code
Formal
Uniforms by Lands' End

Tuition and Acceptance Rate

Admission Deadline
None / Rolling
Yearly Tuition Cost
Admissions Director
Chelsea Clark
Application URL
Endowment Size
$50 million

Extracurriculars

Total ExtracurricularsTotal Extra-curric.
5 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
After School ProgramBoy Scouts
Girl ScoutsStudent Council


Arts and Music Programs:
Gr. 3 - 6 Instrumental Strings Program

School Notes

  • School Mascot: Lions
  • Saint Mark`s School is an independent, coeducational Episcopal school that has been serving students in preschool through grade six since 1960. Situated on a beautiful five-acre campus in the foothills of Altadena, our outdoor spaces provide ample room to learn and play. We believe that the social and emotional development of our students is equally important to their intellectual growth. Our holistic and relational approach to early childhood and elementary education allows a supportive and safe space for students to engage in their learning. With a low student-to-teacher ratio, we are intentional in maximizing students' learning potential and interests. Our well-rounded program equips students with the necessary tools to think critically and creatively, fostering an intellectual curiosity that creates lifelong learners. Our diverse community-from our faculty and staff to our highly engaged parents-models the confidence, resilience, and compassion that we strive to instill in our students who go on to become thoughtful leaders and active citizens in their community and their world.
  • At Saint Mark`s, we are known for our strong sense of community, our partnership with our families, the strength and balance of our academic program, and our ability to be nimble. Especially in today's dynamic landscape, our adaptability, unique staffing model, and spacious campus allow us to deliver an engaging program whether we are online or in person. Saint Mark's is a place that honors childhood while providing the skills our students need to be successful in life.
  • Interested in experiencing the Saint Mark`s difference? Contact our Director of Enrollment Management, Maggie Young at maggiey@saint-marks.org or visit us at saint-marks.org to learn more.
Source: Verified school update

Frequently Asked Questions

How much does St. Marks School - Altadena cost?
St. Marks School - Altadena's tuition is approximately $27,000 for private students.
Does St. Marks School - Altadena offer a summer program?
Yes, St. Marks School - Altadena offers a summer program. Visit their summer school page for more information.
When is the application deadline for St. Marks School - Altadena?
The application deadline for St. Marks School - Altadena is rolling (applications are reviewed as they are received year-round).

School Reviews

  5.00 out of 5  (6 reviews)
5  
We started our journey at St Marks in fall of 2020 with our eldest starting preschool. At an unprecedented time, the school did an unbelievable job of creating an incredible in person learning environment! We have now been at the school 5 years with two kids enrolled and are so happy with the choice we made to attend this gem of a school. My husband and I grew up in the area and had always heard unbelievable reviews of St Marks from our friends, family and coworkers. And now, we are in that grouping of people who speak so highly of our beloved school. The children gain a deep love for learning and learn how to learn. Their wellness is important as well but not in a way that overshadows academics. It's the perfect hybrid of strong academics, taught in age appropriate ways- with the child's wellbeing taken care of. And on top of this, everyone we know that has graduated and gone onto prestigious independent schools in the area say that St Marks prepared the students incredibly well. We are beyond happy with St Marks and what it's provided for our children.
- Posted by
5  
We have been with Saint Marks for 8 years! My oldest first started in the 3s preschool and will be graduating from Saint Marks in 2 years. We couldn't be happier. Saint Marks has exceeded our expectations in every way. The teachers are dedicated and genuinely invested in each child's success. This really rings true for my youngest who has a learning difference and needs a little extra help. His kindergarten year his teacher went above and beyond and connected with his tutor to make sure they were aligned and working on the same thing to ensure he kept on track. She also started the morning out with math after she noticed he excelled at math, it built up his confidence at the beginning of the day to ensure the remainder of the day ran smoothly. This year his teacher connected him with a learning specialist on campus during group reading time to give him the extra attention he needs to build up the confidence to read in front of his peers. The teachers really know your child and will do whatever it takes to ensure they are all getting the exact attention and help they need. The administration is approachable and responsive, always putting students first. There's a real sense of community here. Both of my sons have gained confidence and a love of learning thanks to the nurturing and engaging atmosphere. We couldn't be happier with the quality of education and care provided here and couldn't recommend Saint Marks enough!!
- Posted by
5  
We are endlessly grateful to Saint Mark's. Before our very eyes, we have watched our child grow into the very best version of who she is meant to be, supported every step of the way by devoted and expert educators who guide her to learn and flourish in ways we never would have imagined. We began there in the 3 year old program, and honestly didn't know much about the school beyond the preschool. When it came time for Kindergarten, your child automatically has a spot in the elementary program (a huge plus), but we still wanted to look around at all the competitor schools to make sure we were choosing the best possible place for our family. Our child was so well-prepared coming out of Saint Mark's preschool that she was accepted everywhere we applied. An amazing credit to the preschool! In the end, as we compared all the independent schools in the area, Saint Mark's was the place we found that equally prioritized strong academics, social emotional wellness, extracurricular opportunities, and just being a genuinely good person. We looked no further, and haven't looked back.Lots of these schools will help your child become the best version of their kind of student--Saint Mark's helps your child become the very best version of themself.
- Posted by
5  
TL;DR: You'd be missing out if you didn't check out this hidden gem! I could go on and on about everything, but to save your time and mine I'll point out some highlights. - Low student-to-teacher ratio. Preschool is 15 kids/2 teachers per class. Elementary max of 20ish kids/2 teachers per class. Allows for differentiation in the curriculum so your kid is a lot of attention and being challenged at their level.- Focus on teacher retention: very good, nurturing teachers with lots of experience who are invested in the school long term.- Excellent 7th grade admissions stats.- Amazing school community: I do not know how I would raise these kids without this village and all its resources. People (administration, teachers, parents, etc) are truly authentic and caring. - Episcopalian school but actually very light on the religion. More focus on being a good person and social, emotional, and moral education. Very important in this modern world. Many diverse families here, not just Christian.
- Posted by
5  
I have had the privilege to send multiple children to Saint Mark's School. While I still have a young one enrolled and thriving, my other children got into their first-choice schools and are both doing very well. While being academically prepared is obviously a concern for many parents, I was more worried about making sure they had a balanced upbringing. One of the school's main missions is to "Honor the Student's Childhood." That really resonated with me because, in this day in age, I feel like we are in a big rush to make our kids "grow up" so quickly. The community at Saint Mark's School is very tight-knit and you can really feel the love for each other. Of course, no school is perfect, but I think any of the adversities faced are perfectly normal and end up building character for the child and the parents alike. I feel so lucky to have my family be part of Saint Mark's School and I wouldn't hesitate to recommend this to any young family who values a good balance.
- Posted by
5  
We have been a part of the Saint Mark`s Family for 3 years now, and our two children are thriving for so many reasons. The low teacher-student ratio really helps the faculty get to know each individual student and assist individual needs. Being a preschool-6th grade only, your child learns to become a leader at an early age. Our graduating 6th graders are well-spoken, confident, and compassionate leaders. Community is central to everything. The families come from diverse ethnic and socioeconomic backgrounds and are warm and welcoming. We have made many close friendships here. The families are also very supportive of the faculty and staff. They truly want the staff to continue to grow in their education and other learning avenues. We feel very blessed that our children are able to receive a first-rate education in such a warm and positive environment.
- Posted by

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Quick Facts (2025-26)

  • Grades: Prekindergarten-6
  • Enrollment: 246 students
  • Yearly Tuition: $27,000
  • Average class size: 20 students
  • Application Deadline: None / Rolling
  • Source: Verified school update

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Did You Know?

The average private school tuition in Pasadena, CA is $22,765 for elementary schools and $36,935 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Pasadena, CA is 73% (read more about average acceptance rates across the country).

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