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

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(43)
All Schools
(43)
 
High Schools
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High Schools
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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)
    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
    8565 Ewing Halsell Dr
    San Antonio, TX 78229
    (210) 615-6544

    Grades: K-12 | 190 students
  • 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
  • 9825 Stella Link Rd
    Houston, TX 77025
    (832) 204-5900

    Grades: 6-12 | 508 students
  • 4650 Bissonnet St
    Bellaire, TX 77401
    (713) 512-3400

    Grades: 9-12 | 749 students
  • 4100 Merrell Rd
    Dallas, TX 75229
    (214) 358-4368

    Grades: NS-12 | 1,148 students
  • 4200 Country Day Lane
    Fort Worth, TX 76109
    (817) 302-3209

    Grades: K-12 | 1,055 students
  • 4141 Spring Valley Road
    Addison, TX 75001
    (972) 628-5400

    Grades: PK-12 | 1,338 students
  • 11600 Welch Road
    Dallas, TX 75229
    (214) 363-6311

    Grades: PK-12 | 1,085 students
  • 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
    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
    119 E Craig Place
    San Antonio, TX 78212
    (210) 735-4022

    Grades: NS-12 | 491 students
  • 2720 Hillside Drive
    Dallas, TX 75214
    (214) 826-2931

    Grades: K-12 | 400 students
  • 5900 West Pioneer Parkway
    Arlington, TX 76013
    (817) 451-4994

    Grades: NS-12 | 870 students
  • 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
    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)
    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
  • 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
  • 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)
    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
    5707 Royal Lane
    Dallas, TX 75229
    (214) 691-6950

    Grades: K-12 | 145 students
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