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Keystone School

San Antonio · TX · Private independent · K-12 combined

Private
19 AP courses

At a glance

Programs & features
  • 19 AP courses offered (school profile)
  • 4 National Merit SemifinalistsRoughly the top 1% of PSAT scorers in each state — about 16,000 juniors nationally. A useful gauge of a school's academic top end. (2025)
Academic signals
  • SAT avg 1356 (25-75: 1210–1520)
  • ACT avg 28 (25-75: 25–30)
  • APCollege-level courses with a national exam each May. A score of 3+ "passes" and can earn college credit; the pass rate tells you whether a school's AP program has substance behind the course list. exam pass rate 92%

Composed from the school's own published profile (2025), and other public data. Full breakdowns below.

You've seen Keystone School. What are your child's real college odds? Check any college in 10 seconds — no email needed — then get the free Family Decision Report: Reach / Competitive / Match / Likely + the real cost range for every college on their list. Check odds →

How Keystone School compares for families

What families should know about Keystone School.

  • ▸ LocallyTX students outperform the US average on NAEP 8th-grade math (+4 points).
  • ▸ vs Similar SchoolsThe closest comparables nearby: Healy-Murphy Center, One School Global, St Mary'S Hall and 5 more. See the sidebar to compare side-by-side.

For Parents

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Your state's public flagship

The University of Texas at Austin

29%
admit rate
$11,688
in-state tuition/yr · $44,908 out-of-state
1230–1490
SAT 25–75 · ACT 27–33

The in-state tuition gap is the flagship's biggest draw — most in-state families pay far less than the out-of-state sticker. Average net price after aid runs about $19,857/yr. Admission odds depend on your student's GPA and test scores, not which high school they attend.

See the full The University of Texas at Austin profile → Estimate your odds with your scores →

Source: IPEDS admissions, tuition & enrollment + College Scorecard net price. Flagship = the state's primary public research university.

Pay for college in Texas

Texas's public scholarships

Texas families have two big levers: a guaranteed-admission rule for the top of each graduating class, and the need-based TEXAS Grant that pairs with it. Class rank does more here than almost anywhere.

Auto-admit Top 10% Automatic Admission
Guaranteed admission to a Texas public university (not a $ award)
GPA: Top 10% class rank (UT Austin caps at top 5%)

Graduate in the top 10% of your Texas public-HS class and finish the required curriculum for automatic admission to TX public universities (UT Austin caps at the top 5%). (Must finish the required college-prep curriculum (Distinguished plan).)

Official program details ↗
Need-based TEXAS Grant
Up to $16,182/yr (tuition & required fees)
GPA: No GPA gate to qualify (3.0 / top-third = priority) Income: Need-based (federal Student Aid Index)

Texas's flagship need-based grant — no GPA gate to qualify (a 3.0 or top-third rank just gives priority when funds run short). (Enroll within 16 months of HS, ≥¾ time, in a bachelor's program.)

Official program details ↗
Merit Texas First Early Completion Scholarship
Scholarship equal to the TEXAS Grant amount
GPA: 3.0 Test: SAT/ACT at the 80th percentile OR top-10% class rank

Graduate at least a semester early with the Distinguished plan plus a 3.0 GPA and an 80th-percentile test (or top-10% rank) for a TEXAS Grant-sized scholarship. (Graduate at least a semester early with the Distinguished plan.)

Official program details ↗

Eligibility rules change yearly — confirm with the official program before relying on it. Amounts are recent published figures; awards cover tuition/fees, not housing or books unless noted. Verified 2026-06-14.

Their published matriculation list

Where their graduates enrolled

Keystone School (San Antonio) publishes where its graduates enrolled. What follows is copied from that document — 88 colleges, ordered by the number of students enrolled.

Years, as the document states them
2020-2025

College  ·  Students

The University of Texas at Austin 27
Trinity University 9
Rice University 6
Southwestern University 6
Texas A&M University - College Station 6
Northeastern University 5
University of Pennsylvania 5
Massachusetts Institute of Technology 4
The University of Texas at San Antonio 4
Tulane University 4
Colorado School of Mines 3
Cornell University 3
Southern Methodist University 3
Stanford University 3
Washington University in St Louis 3
Boston University 2
Bowdoin College 2
Brown University 2
Carnegie Mellon University 2
Columbia University 2
Duke University 2
Fordham University 2
Furman University 2
Indiana University-Bloomington 2
Johns Hopkins University 2
New York University 2
Smith College 2
The University of Texas at Dallas 2
United States Military Academy 2
University of California-Berkeley 2
and 58 more
Franklin W Olin College of Engineering 1
Hong Kong Polytechnic University, The 1
McGill University 1
NYU Shanghai 1
The University of British Columbia 1
Trinity College Dublin 1
Union College 1
University of Edinburgh 1

These graduates went on to the colleges above.

Check your kid's odds at these colleges →

We'll load the 10 colleges the class chose most often — add your name, email and your child's numbers and we'll see where your child lands at each.

Independently verified As published by Keystone School (San Antonio) — Keystone School Profile 2025-2026 ↗. Found at: p.3, 'College Matriculation 2020-2025' table.

Enrollment trend & projection

Total enrollment went from 415 in 2020 to 443 in 2022 — over 2 years.
+6.7%
Why only 2 data points?

Private school enrollment comes from the NCES Private School Universe Survey (PSS), which is collected every other year — not annually like public-school data. The most recent published collection is 2021–22; NCES targeted spring 2026 for the 2023–24 release — we'll load it as soon as it's published.

For a more current snapshot, see Keystone School's own published school profile (as of 2025-26): keystoneschool.org/wp-content/uploads/2025/12/Key… ↗

Most similar nearby high schools

The schools most like this one — same type, blended on distance and size — and where their enrollment is heading. These are the schools families here weigh against each other.

SchoolTypeMilesHS enrollmentTrend
Healy-Murphy Center
San Antonio
 Private 1.9 128 -4.5%
One School Global
San Antonio
 Private 4.6 27 —
St Mary'S Hall
San Antonio
 Private 6.6 689 -23.4%
The Winston School San Antonio
San Antonio
 Private 7.0 170 -32.0%
St Anthony Catholic High School
San Antonio
 Private 0.6 266 —
Central Catholic High School -San Antonio
San Antonio
 Private 1.2 532 -10.9%
Providence Catholic School
San Antonio
 Private 1.2 236 -7.5%
Incarnate Word High School
San Antonio
 Private 1.4 370 -10.2%

Related reading

Eleven Dallas private schools share one application deadline — January 8

Dallas · August 26, 2026

All stories from the data →

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What families ask next

Is our high school good? High School Explorer → Enrollment trends and projections for ~35,000 schools nationwide. Can my kid get in? Score odds calculator → See how a higher SAT or ACT changes admit odds — college by college. What do we do next? Free Family Decision Report Reach / Competitive / Match / Likely for every college on their list, plus the real cost. Start with a 10-second odds check — no email needed. Check odds →