Keystone School Photo #1 - Keystone School Upper School Students
Keystone School Photo #1 - Keystone School Upper School Students
Keystone School has been a haven for bright, motivated students 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.
Through a strong academic curriculum, the school challenges students to 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.
Working collaboratively in the high school, students continue to demonstrate to each other the value of acquiring knowledge, developing strong study habits, and mastering research skills.

Quick Stats (2022)

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.: 40%
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
Average SAT score
Average ACT score
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.
10 extracurriculars
Club or Organization:
Academic WolrdQuest, Astronomy Club, Foreign Language Club, Literary Magazine, Model UN, National Honor Society, Science Bowl, Student Council, Students for Enviromental Action and Service, Yearbook

School Notes

  • Keystone offers a challenging program for Grades PK3-12 in a caring, diverse environment that brings out the most in each individual and prepares students to compete among the best in the world.
Source: Verified school update

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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Did You Know?

The average private school tuition in San Antonio, TX is $8,802 for elementary schools and $10,274 for high schools (read more about average private school tuition across the country).
The average acceptance rate in San Antonio, TX is 85% (read more about average acceptance rates across the country).

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