College Transitions’ list of the Best Private Schools in San Antonio will focus primarily on our area of expertise—college admissions. As such, we will highlight the job each school does of sending their graduates on to the region/nation’s premier 4-year schools. If you are a San Antonio-Area parent actively searching for the best-fit private schools for your child or teen (no matter the current age of your student), you are likely interested in the college preparation and counseling offered by each prospective school.  Of course, in addition to that particular angle, you will also need to balance your teen’s academic, emotional, and social needs with financial and logistical considerations.

Please note that inclusion on our Best Private Schools in San Antonio list is a selective and criteria-based process. However, the order in which the schools appear is not representative of any further ranking; the numbering is solely intended to enhance the ease of navigating this resource. All of the schools profiled below have a history of sending graduates to the top colleges in the country. For each of the best private high schools in San Antonio, College Transitions will provide you with the school’s:

  • Location
  • Tuition (9-12)
  • Enrollment (9-12)
  • Average SAT Score
  • Average ACT Score
  • Senior Class Size
  • College Admissions Highlights
  • Academic Highlights

Now, let’s look at the best private schools in San Antonio:

1) Keystone School

Location: 119 E Craig Pl, San Antonio, TX 78212

Tuition (9-12): $23,095

Enrollment (seniors): 29

Average SAT Score: 1404

Average ACT Score: 32

College Admissions Highlights:

From 2015-2020, large numbers of Keystone grads matriculated into UT Austin (26), Trinity University (11), SMU (8), Northeastern (4), NYU (4), Stanford (3), UNC Chapel Hill (3), Vanderbilt (3), Georgetown (3), WashU (3), UCLA (3), Penn (2), USC (2)), Claremont McKenna (2), Emory (2), and Tufts (2).

Academic Highlights:

  • 80% of teachers possess advanced degrees.
  • The average class size is between 16 and 18 students.
  • 60% identify as students of color.
  • Teachers have an average of 20 years of teaching experience.
  • 86% score a 3 or better on AP exams.

2) Geneva School of Boerne  

Location:  113 Cascade Cavern, Boerne, TX 78015

Tuition (9-12): $13,875

Enrollment (seniors): 54

Average SAT Score: 1227

Average ACT Score: 26

College Admissions Highlights:

In the last decade, students have matriculated into the following highly-selective colleges: William & Mary, Holy Cross, Pepperdine, Purdue, Sewanee – The University of the South, SMU, Notre Dame, Penn, UT Austin, UVA, Vanderbilt, and Washington & Lee.

Academic Highlights:

  • The Class of 2022 had six students who were National Merit-recognized.
  • 51-acre campus.
  • 60% of faculty have advanced degrees.
  • The Class of 2022 had a 3.87 median GPA.
  • 11 AP courses are available.

3) Providence Catholic School

Location: 1215 N St Mary’s St, San Antonio, TX 78215

Tuition (9-12): $11,247

Enrollment (6-12): 235

Average SAT Score: Not Reported

Average ACT Score: Not Reported

College Admissions Highlights:

“Each year 100% of Providence graduates are accepted to a college or university of their choice. Students have been accepted to top local, state, and national schools such as Stanford, Purdue, the United States Military Academy at West Point, Marquette, Johns-Hopkins, The Air Force Academy, Notre Dame, Swarthmore, and many more.”

Academic Highlights:

  • Providence is an all-girls institution.
  • 12 AP courses are offered.
  • 5 dual enrollment courses are available.
  • Collectively, students earn $10 million in college scholarship offers each year.
  • Strong visual and performing arts program.

4) Saint Mary’s Hall

Location: 9401 Starcrest Dr, San Antonio, TX 78217

Tuition (9-12): $31,101

Enrollment (seniors): 90

Average SAT Score: 1322

Average ACT Score: Not Reported

College Admissions Highlights:

Between 2018 and 2022, three or more students matriculated into the following schools: Dartmouth (3), Duke (6), Georgetown (4), Harvard (4), Kenyon (3), NYU (12), Northeastern (4), Northwestern (5), UT Austin (52), Trinity University (20), Tulane (10), UMich (4), UNC Chapel Hill (3), USC (3), UVA (4), Vanderbilt (3), Villanova (3), and Washington & Lee (4).

Academic Highlights:

  • 59% of faculty possess advanced degrees.
  • 64% of students are accepted into their first-choice college.
  • There were 20 National Merit Scholars in the Class of 2022.
  • The average class size is 15.
  • 20 AP courses are on the menu.

5) San Antonio Christian School

Location: 19202 Redland Rd, San Antonio, TX 78259

Tuition (9-12): $15,850

Enrollment (seniors): 69

Average SAT Score: 1166

Average ACT Score: Not Reported

College Admissions Highlights:

Students in the Class of 2022 earned acceptances into colleges such as: Colorado School of Mines, Embry-Riddle, William & Mary, LMU, Pepperdine, Rice, SMU, Texas A&M, Texas Tech, Trinity University, UGA, UT Austin, and the University of Toronto.

Academic Highlights:

  • 77% of the Class of 2022 earned a 3.5 or better GPA.
  • 48% of faculty hold advanced degrees.
  • 62-acre campus.
  • The Class of 2022 earned a collective $7.7 million in scholarship offers.
  • Average class size of 13 students.

6) Central Catholic High School

Location: 1403 N St Mary’s St, San Antonio, TX 78215

Tuition (9-12): $13,675

Enrollment (seniors): 137

Average SAT Score: 1077

Average ACT Score: Not Reported

College Admissions Highlights:

The Class of 2021 went on to enroll at the following institutions: Colorado School of Mines, FSU, MIT, Purdue, Rice, TCU, Texas Tech, Trinity University, US Air Force Academy, US Naval Academy, UT Austin, Washington University in St. Louis, and Yale.

Academic Highlights:

  • Central Catholic in an all-boys institution.
  • 83% of faculty members possess advanced degrees.
  • 85% of the students identify as Hispanic.
  • The median GPA is 3.73.
  • 14:1 student-to-faculty ratio.

7) Antonian College Preparatory High School

Location: 6425 West Ave, San Antonio, TX 78213

Tuition (9-12): $12,320

Enrollment (9-12): 724

Average SAT Score: Not Reported

Average ACT Score: Not Reported

College Admissions Highlights:

“Over the past several years, the graduating classes have been accepted by a variety of colleges and universities, including many prominent schools such as Cornell, Olin College of Engineering, Harvard, Yale, MIT, Boston University, Notre Dame, Columbia, Rice, DePaul, and the like.”

Academic Highlights:

  • $28.2 million in college scholarships were offered in 2022.
  • 14:1 student-to-teacher ratio.
  • There are two full-time college counselors.
  • 8 academic clubs, 10 service clubs, and over 20 special interests clubs
  • Advanced Placement and dual enrollment opportunities are available.

8) St. John Paul II Catholic High School

Location: 6720 FM 482 New Braunfels, Texas  78132

Tuition (9-12): $7,000

Enrollment (9-12): 205

Average SAT Score: Not Reported

Average ACT Score: Not Reported

College Admissions Highlights:

From 2013-2021, notable college acceptances include Boston College, Holy Cross, Pepperdine, Purdue, Rhodes, SMU, Texas A&M, Notre Dame, US Air Force Academy, Villanova, UT Austin, Tulane, Trinity University, SCAD, Syracuse, Baylor, and the Colorado School of Mines.

Academic Highlights:

  • The average class size is 10 students.
  • 8 students have been named National Merit Commended Scholars.
  • 11:1 student-to-teacher ratio.
  • 20% earn AP Scholar designations.
  • 11 AP courses are available.

9) The Atonement Catholic Academy

Location: 15415 Red Robin Rd, San Antonio, TX 78255

Tuition (9-12): $8,800

Enrollment (seniors): 20

Average SAT Score: 1293

Average ACT Score: Not Reported

College Admissions Highlights:

In the past few years, graduates have been admitted into schools like the US Naval Academy, Stanford, Notre Dame, Rice, Duke, Washington & Lee, Boston College, UC Berkeley, and the University of St. Andrews in Scotland.

Academic Highlights:

  • 18 is the average class size.
  • Students maintain an average GPA of 90.3.
  • 5-10% of seniors earn National Merit recognition.
  • 8 AP courses are offered.
  • Students collectively earn more than $2 million in scholarships each year.

10) TMI Episcopal

Location: 20955 Tejas Trl W, San Antonio, TX 78257

Tuition (6-12): $29,477

Enrollment (seniors): 470

Average SAT Score: Not Reported

Average ACT Score: Not Reported

College Admissions Highlights:

Members of the Class of 2022 earned acceptances into the following colleges: Boston College, Brown, Case Western, Denison, Harvard, Lehigh, Purdue, SMU, Syracuse, TCU, UNC Chapel Hill, UT Austin, UC Berkeley, UCLA, Notre Dame, University of Richmond, USC, Vanderbilt, and Vassar.

Academic Highlights:

  • Founded in 1893.
  • 30% of students are cadets in JROTC.
  • The school offers a boarding option.
  • 20 AP courses are offered.
  • 74% of teachers have advanced degrees.

Best Private Schools in San Antonio – Additional Resources

We hope you found our blog on private schools in San Antonio (and the surrounding suburbs) to be helpful. All high school students and families may wish to explore further information regarding the college search and admissions process at our Dataverse, Blog, and List-Building Tool.