Keystone School

Keystone School Photo #1 - Keystone School Upper School Students
Keystone School Photo #1 - Keystone School Upper School Students
Keystone offers a challenging, academically accelerated program for Grades PK3-12 in a caring, diverse environment that brings helps students realize their full potential and and prepares them to compete among the best in the world.

Quick Stats (2024)

  • Top Ranked TX School
  • Grades: Nursery/Preschool-12
  • Enrollment: 491 students
  • Average class size: 16 students
  • Application Deadline: Feb. 1 / rolling
  • Source: Verified school update

Top Rankings

Keystone School ranks among the top 20% of private schools in Texas for:

School Overview

Religious Affiliation
Grades Offered
Grades Nursery/Preschool-12
Year Founded

Student Body

Total Students
491 students
Student Body Type
% Students of Color
State avg.: 41%
Students by Grade
Keystone School Student By Grade

Academics and Faculty

Total Classroom Teachers
37 teachers
Student : Teacher Ratio
National avg.: 13:1
% Faculty w/Advanced Degree
Average Class Size
16 students
Number of AP Courses
13 courses
List of Courses Offered
Average SAT score
(Out of 1600)
Average ACT score
(Out of 36)
Matriculation DataMatric. Data
Classroom Dress Code

Tuition and Acceptance Rate

Admission Deadline
Feb. 1 / rolling
Tuition Notes
Tuition is tiered: Little School: $12,236 Kindergarten: $15,662 Grades 1-4: $16,812 Grades 5-8: $18,496 Grades 9-12: $20,129
% on Financial Aid
Admissions Director
Andrea Banks


Total Sports Offered
5 sports


Total ExtracurricularsTotal Extra-curric.
21 extracurriculars
Club or Organization:
Academic World Quest, Board Game Club, Coding Club, Debate Club, DEI Council, Dungeons and Dragons Club, Key Crew, Keynote (online news site), Literary Magazine, Math Club, Medical Club, Model UN, National Honor Society, Quiz Bowl, Robotics, Science Fair, Student Council, Wellness Council, World Languages Club, Yearbook

Arts and Music Programs:
Stone Soul

School Notes

  • At Keystone School, we select bright, talented and motivated young people for our academically accelerated program, and help them realize their potential. Our faculty and staff challenge and nurture young people throughout their educational journey inside and outside the classroom.In the culture of Keystone, students who love to learn and achieve in academics, arts, sciences, athletics and other diverse interests support and challenge each other, while expert and caring teachers guide their inquiries from preschool through their high school.Since 1948, the mission of Keystone School is to offer an accelerated PK3-12 curriculum to provide motivated students with a nationally recognized, well-rounded educational experience in a supportive, inclusive environment that encourages academic excellence, ethical growth, community involvement, and responsible leadership.Throughout their school experience, students develop diligence, independence, self-discipline, responsibility, and inquisitiveness.The educational culture of Keystone encourages students to pursue independent thought and research in a balanced environment. Students begin learning academic skills through play in our Little School, build upon them in Lower School, begin to build independence, strong study skills, and prepare for higher level work in Middle Schoool and are excelling in college-level work throughout Upper School.After students graduate from Keystone, they gain admission and thrive at the most challenging and prestigous colleges and universitites in the country, and continue their success in graduate schools and move on to rewarding and fulfilling careers and lives.
  • Sample of notable school alumni/alumnae:
    • Michael Watkins '78 - Former director of the Jet Propulsion Laboratory, professor at Caltech
    • Carmen Tafolla ‘70 - Author, Poet Laureate of Texas, Poet Laureate of San Antonio
    • Sendhil Ramamurthy ‘91 - Actor
    • Nancy Zhou ‘11 - Concert violinist, winner of the Shanghai Isaac Stern Violin Competition
    • Jay Fielden ‘88 - Former editor of Esquire and Town and Country magazines
Source: Verified school update

Frequently Asked Questions

Who are famous alumni from Keystone School?
Keystone School famous alumni include: Michael Watkins '78, Carmen Tafolla ‘70, Sendhil Ramamurthy ‘91, Nancy Zhou ‘11 and Jay Fielden ‘88.
What sports does Keystone School offer?
Keystone School offers 5 interscholastic sports: Basketball, Soccer, Tennis, Track and Field and Volleyball.
What is Keystone School's ranking?
When is the application deadline for Keystone School?
The application deadline for Keystone School is Feb. 1 / rolling (applications are due on Feb. 1 but additional applications are reviewed year-round as space permits ).
In what neighborhood is Keystone School located?
Keystone School is located in the Monte Vista neighborhood of San Antonio, TX. There are 3 other private schools located in Monte Vista.

School Reviews

  5.00 out of 5  (6 reviews)
My kid didn`t do good at public, but he wanted to learn. Ever since I enrolled him to keystone in 7th Grade, he has found a new love for learning.
- Posted by
I have never been associated with a finer academic institution. The teachers are phenomenal. The facilities are serene and conducive to academia and the students are highly motivated. Our sons have thrived here. They have been in the top 99.9 percentile on both PSAT and SAT. They have made all 5's on their AP exams. Plus they have done well in Academic World Quest, enjoyed Model U.N., been district champions two years in a row in athletics. They have received Spanish, Math , Literary awards and placed in regional science fairs. They have also enjoyed being in theater productions. They appreciate their classmates and love their faculty and administration.Amazing, fabulous, superb, we could not be more pleased.In our es
- Posted by
I feel as though Keystone is clearly the best school in San Antonio if your focus is academics and getting the best experience possible for your child. Just take a look at almost any academic measure and you'll find Keystone at the top of that list in South Texas, Texas, and even the entire United States. I have watched my son flourish in this environment in ways that cannot be quantified. It truly feels like a big, nurturing family. The teachers, parents, administrators, staff, and students all seem to care and are motivated to achieve the best possible outcomes. When you put those things together, you get a culture that is frankly unrivaled in the region. The best academic decision I ever made for my son was sending him to Keystone. Their academic awards are outstanding and one walk through the halls seeing all the INTERNATIONAL science awards says all most parents need to know. They offer quality arts and sports programs as well. If you want your child to get a scholarship to play football, this may not be the best fit but... if you want your child to receive a full scholarship because of their research on quantum computing (Which actually happened this year!), then you can do no better.
- Posted by
Wow! Every year the students at Keystone do the most amazing things - stuff that only happens once in a decade at other schools happens many times each year at Keystone: World Championships in WorldQuest; Science Fair grand prizes; Gold Key and Pegasus Poetry publications; the highest percentage of national merit recognized students in San Antonio (and maybe even all of Texas); the list goes on and on. These things reflect just how much the students are learning and accomplishing every day, and the teachers and culture at the School are just awesome!
- Posted by
Keystone is such an amazing place! My son has been here for 2 years and has grown tremendously since enrolling at Keystone. The classes are small, the teachers are supportive and nurturing, and the curriculum is challenging and engaging for the students. A fantastic combination for a great school community. We are so happy with our Keystone experience!
- Posted by
This school is the most amazing school in Texas, and one of the best in the entire United States. Look into the statistics on student performance and you will be amazed: average SAT around 2100, average student score of 4.5 on an average of 8 AP tests, 50% or more National Merit commendations per year. These numbers are crazily impressive. Also, the school is close to 60% non Anglo.The school has a reputation for being a math science school. It is great in these subjects, but also in every other subject, including visual and performing arts and foreign languages. You have to visit to understand all that happens there, and to experience the culture that embraces learning more than anything else.
- Posted by

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Quick Stats (2024)

  • Top Ranked TX School
  • Grades: Nursery/Preschool-12
  • Enrollment: 491 students
  • Average class size: 16 students
  • Application Deadline: Feb. 1 / rolling
  • Source: Verified school update

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Did You Know?

The average private school tuition in San Antonio, TX is $9,626 for elementary schools and $10,876 for high schools (read more about average private school tuition across the country).
The average acceptance rate in San Antonio, TX is 87% (read more about average acceptance rates across the country).

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