Top Independent Schools Association of the South West (ISAS) Private High Schools in Texas

All Schools
(43) All Schools
(43)  High Schools
(26) High Schools
(26)  Elementary Schools
(40) Elementary Schools
(40)  Preschools
(27) Preschools
(27) 
For the 2021 school year, there are 26 top private schools in Texas belonging to the Independent Schools Association of the South West (ISAS), serving 18,155 students.
ISAS promotes, upholds, and advances the highest educational and professional standards for the region’s independent schools. We offer our members an exceptionally rigorous, authentic, and meaningful accreditation process, along with energizing professional development opportunities, a nationally renowned arts festival, and a warm, generous community devoted to creating the best possible educational experiences for our students.You can also find more schools membership associations in Texas.

Top Independent Schools Association of the South West (ISAS) Private High Schools (2021)

  • School Location Grades Students
  • Duchesne Academy Of The Sacred Heart
    Duchesne Academy Of The Sacred Heart Photo - Duchesne Academy of the Sacred Heart is Houston's only all-girls' Catholic school offering Pre-K3 through 12th-grade education.
    All-girls (Roman Catholic)
    (5)
     10202 Memorial Dr
    Houston, TX 77024
    (713) 468-8211
    Grades: PK-12 | n/a students
  • The Winston School San Antonio
    The Winston School San Antonio Photo - The Winston School San Antonio"Advocating for minds that learn differently."
    Special Education School
    (2)
     8565 Ewing Halsell Dr
    San Antonio, TX 78229
    (210) 615-6544
    Grades: K-12 | 190 students
  • Allen Academy
    Allen Academy Photo
    (3)
     3201 Boonville Rd
    Bryan, TX 77802
    (979) 776-0731
    Grades: PK-12 | 328 students
  • Austin Waldorf School
    Austin Waldorf School Photo - Grade Two Classroom
    Waldorf School
     8700 South View Road
    Austin, TX 78737
    (512) 288-5942
    Grades: K-12 | 383 students
  • Cistercian Preparatory School
    Cistercian Preparatory School Photo
    All-boys | Special Program Emphasis (Roman Catholic)
     3660 Cistercian Road
    Irving, TX 75039
    (469) 499-5402
    Grades: 5-12 | 345 students
  • The Emery/weiner School
    The Emery/weiner School Photo - A number of students participate in arts programs at Emery/Weiner. Extracurricular opportunities in the arts include theater, dance, choir, band, and studio art offerings.
    (Jewish)
     9825 Stella Link Rd
    Houston, TX 77025
    (832) 204-5900
    Grades: 6-12 | 508 students
  • Episcopal High School
    Episcopal High School Photo
    (Episcopal)
     4650 Bissonnet St
    Bellaire, TX 77401
    (713) 512-3400
    Grades: 9-12 | 749 students
  • The Episcopal School Of Dallas
    The Episcopal School Of Dallas Photo - Upper School students engage in an array of transformative experiences that foster the pursuit of academic excellence within a strong, supportive community. On average, 67% of ESD's 108-member graduating class receives over $10M in merit scholarships and 436 college acceptances.
    (Episcopal)
     4100 Merrell Rd
    Dallas, TX 75229
    (214) 358-4368
    Grades: NS-12 | 1,148 students
  • Fort Worth Country Day
    (3)
     4200 Country Day Lane
    Fort Worth, TX 76109
    (817) 302-3209
    Grades: K-12 | 1,055 students
  • Greenhill School
    Greenhill School Photo
    4141 Spring Valley Road
    Addison, TX 75001
    (972) 628-5400
    Grades: PK-12 | 1,338 students
  • The Hockaday School
    The Hockaday School Photo
    All-girls
     11600 Welch Road
    Dallas, TX 75229
    (214) 363-6311
    Grades: PK-12 | 1,085 students
  • Houston Christian High School
    Houston Christian High School Photo - The "Passport to Lead" program's vision is to inspire young people to lead by uniting faith, intellect and gifts to reach their greatest promise. We teach our students to take the lead to influence people to achieve a common goal and, through this process, honor God. In addition, leadership topics are integrated in the curriculum of every course taught at HC.
    (Christian)
    (1)
     2700 W Sam Houston Parkway N
    Houston, TX 77043
    (713) 580-6000
    Grades: 9-12 | 470 students
  • The John Cooper School
    The John Cooper School Photo - Dunlap Gymnasium
    Special Program Emphasis
    (9)
     One John Cooper Drive
    Spring, TX 77381
    (281) 367-0900
    Grades: PK-12 | 1,202 students
  • Keystone School
    Keystone School Photo - Keystone School Upper School Students
    Special Program Emphasis
    (6)
     119 E Craig Place
    San Antonio, TX 78212
    (210) 735-4022
    Grades: NS-12 | 491 students
  • Lakehill Preparatory School
    Lakehill Preparatory School Photo - Lakehill students all go on to pursue education at a higher level, and are accepted into Ivy League schools, top research universities, liberal arts colleges, renowned art institutions, and international universities.
    (3)
     2720 Hillside Drive
    Dallas, TX 75214
    (214) 826-2931
    Grades: K-12 | 400 students
  • The Oakridge School
    The Oakridge School Photo - In the past five years, 100% of Oakridge's graduates have been accepted to four-year colleges.
    (9)
     5900 West Pioneer Parkway
    Arlington, TX 76013
    (817) 451-4994
    Grades: NS-12 | 870 students
  • Parish Episcopal School
    Parish Episcopal School Photo - The new Gymnasium at Parish Sigma campus.
    (Episcopal)
    (4)
     4101 Sigma Road
    Dallas, TX 75244
    (972) 239-8011
    Grades: NS-12 | 1,100 students
  • The Post Oak School
    The Post Oak School Photo - Middle School (D.C. trip)
    Montessori School
    (1)
     4600 Bissonnet St
    Bellaire, TX 77401
    (713) 661-6688
    Grades: NS-12 | 475 students
  • St. Mark's School Of Texas
    St. Mark's School Of Texas Photo - St. Mark's School of Texas campus
    All-boys (Episcopal)
    (1)
     10600 Preston Road
    Dallas, TX 75230
    (214) 346-8700
    Grades: 1-12 | 884 students
  • Saint Mary's Hall
    Saint Mary's Hall Photo - Saint Mary's Hall Dance
    (Christian)
     9401 Starcrest Dr
    San Antonio, TX 78217
    (210) 483-9100
    Grades: PK-12 | 987 students
  • St. Stephens Episcopal School
    (Episcopal)
     6500 St. Stephen's Drive
    Austin, TX 78746
    (512) 327-1213
    Grades: 6-12 | 684 students
  • Shelton School
    Special Program Emphasis
     17301 Preston Road
    Dallas, TX 75252
    (972) 774-1772
    Grades: PK-12 | 981 students
  • Tmi Episcopal
    (Episcopal)
     20955 West Tejas Trail
    San Antonio, TX 78257
    (210) 698-7171
    Grades: 6-12 | 467 students
  • Trinity Valley School
    Trinity Valley School Photo - TVS: Celebrating 60 years of timeless education
    7500 Dutch Branch Rd
    Fort Worth, TX 76132
    (817) 321-0100
    Grades: PK-12 | 1,020 students
  • Ursuline Academy Of Dallas
    All-girls (Roman Catholic)
    (3)
     4900 Walnut Hill Ln
    Dallas, TX 75229
    (469) 232-1800
    Grades: 9-12 | 850 students
  • The Winston School
    The Winston School Photo
    Special Education School
    (1)
     5707 Royal Lane
    Dallas, TX 75229
    (214) 691-6950
    Grades: K-12 | 145 students
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