Keystone School
Independent school · Grades Pre-K–12
San Antonio, TX
119 E Craig Pl, San Antonio, TX 78212
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- B+Class size
- ACollege-going
- BYears serving families
- A+Diversity
What stands out
- 100% of graduates go to four-year colleges
- One school from pre-K through 12th grade
In San Antonio, Texas, Keystone School is an independent private school for students from pre-K through 12th grade. About 419 students attend, with roughly 8 students per teacher. Its enrollment has held steady since 2019–20. The school reports that about 100% of its graduates go on to four-year colleges. The school day runs about 7.5 hours, 200 days a year. Texas has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades Pre-K–12
- Students
- 419
- Teachers
- 51.3 (full-time equivalent)
- Students per teacher
- 8.2
- Boys and girls
- Coed · 228 girls, 191 boys
- Religious affiliation
- None (nonsectarian)
- School day
- About 7.5 hours
- School year
- 200 days
- Graduates going to 4-year colleges
- About 100% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Larger than 73% of independent schools in Texas.
- Compared with 64 independent schools in Texas.
Students by survey year
Total students reported in official records since 2019–20.
Students by grade
Student body
Member of
- National Association of Independent Schools
Help paying tuition in Texas
These state programs can help pay private school tuition. Only participating schools can accept them, so ask Keystone School whether it takes part.
- Texas Education Freedom Accounts (TEFA) · Education savings account
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about Keystone School
What grades does Keystone School serve?
Keystone School serves grades Pre-K–12.
How many students attend Keystone School?
About 419 students, with 8 students per teacher, according to official records.
How much is tuition at Keystone School?
Call the school to ask about tuition, financial aid and payment plans. Texas has programs that can help pay private school tuition; ask whether the school takes part.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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