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Best Texas Private High Schools Belonging to National Association of Independent Schools (NAIS) (2025-26)

For the 2025-26 school year, there are 52 private high schools belonging to National Association of Independent Schools (NAIS) serving 32,221 students in Texas. You can also find more schools membership associations in Texas.
The top ranked private high schools belonging to National Association of Independent Schools (NAIS) in Texas include Keystone School, St. Agnes Academy College Preparatory, and St. Stephen's Episcopal School.
The average tuition cost is $26,488, which is higher than the Texas private high school average tuition cost of $14,508.
50% of private high schools belonging to National Association of Independent Schools (NAIS) in Texas are religiously affiliated (most commonly Episcopal and Catholic).

Top Ranked Private High Schools Belonging to National Association of Independent Schools (NAIS) in Texas (2025-26)

School
Location
Quick Facts
E.A. Young Academy
E.A. Young Academy Photo - At E.A. Young Academy, we work to develop innovative, problem solving, compassionate stewards of our global community. Our scholars are ready!
Special Program Emphasis
(20)
608 Henrietta Creek
Roanoke, TX 76262
(682) 831-1776
Gr: K-12 | 92 students Avg. class size: 12 students Sports: 2 | Extracurrculars: 16 Tuition & acceptance rate listed
Memorial Private School (6th - 12th)
Memorial Private School (6th - 12th) Photo - Low Stress. High Outcomes. Students have many opportunities to improve leadership and public speaking skills in our small low-stress learning environment at Memorial Private School.
Special Program Emphasis (Christian)
(9)
14333 Fern Drive
Houston, TX 77079
(281) 759-2288
Gr: 6-12 | 84 students Avg. class size: 10 students Sports: 13 | Extracurrculars: 13 Tuition & acceptance rate listed
Alcuin School
Alcuin School Photo
Montessori School
6144 Churchill Way
Dallas, TX 75230
(972) 239-1745
Gr: PK-12 | 634 students Avg. class size: 15 students Sports: 8 Tuition & acceptance rate listed
All Saints Episcopal School
(Episcopal)
9700 Saints Cir
Fort Worth, TX 76108
(817) 560-5700
Gr: PK-12 | 1,139 student
Allen Academy
Allen Academy Photo
(3)
3201 Boonville Rd
Bryan, TX 77802
(979) 776-0731
Gr: PK-12 | 327 students Avg. class size: 12 students Sports: 11 | Extracurrculars: 13 Tuition & acceptance rate listed
Ascension Academy
Ascension Academy Photo
(2)
9301 Ascension Pkwy
Amarillo, TX 79119
(806) 382-1200
Gr: 5-12 | 133 students Avg. class size: 11 students Sports: 12 | Extracurrculars: 21 Tuition & acceptance rate listed
The Awty International School
The Awty International School Photo - The Awty Campus Center is a vibrant hub for learning, creativity, and community. Featuring flexible classrooms, collaborative spaces, and a performance hall, the Center supports Awty's mission to inspire global citizenship and academic excellence. Designed for innovation and connection, it reflects the school's commitment to providing an exceptional environment for students, faculty, and families.
Special Program Emphasis
(1)
7455 Awty School Ln
Houston, TX 77055
(713) 580-0579
Gr: PK-12 | 1,796 student Sports: 12 | Extracurrculars: 20 Tuition listed
Brazos Christian School
(Christian)
3000 W Villa Maria Road
Bryan, TX 77807
(979) 823-1000
Gr: PK-12 | 443 students Sports: 11 | Extracurrculars: 2 Tuition listed
Burton Adventist Academy
(Seventh Day Adventist)
(3)
4611 Kelly Elliott Rd
Arlington, TX 76017
(817) 572-0081
Gr: PK-12 | 309 students Sports: 6 Tuition & acceptance rate listed
Christ The King Cathedral School
(Catholic)
4011 54th St
Lubbock, TX 79413
(806) 795-8283
Gr: PK-12 | 276 students
Cistercian Preparatory School
Cistercian Preparatory School Photo
All-boys | Special Program Emphasis (Catholic)
3660 Cistercian Road
Irving, TX 75039
(469) 499-5400
Gr: 5-12 | 357 students Avg. class size: 22 students Sports: 9 | Extracurrculars: 7 Tuition listed
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 (Catholic)
(5)
10202 Memorial Dr
Houston, TX 77024
(713) 468-8211
Gr: PK-12 | 813 students Sports: 13 | Extracurrculars: 8 Tuition & acceptance rate listed
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)
(1)
9825 Stella Link Rd
Houston, TX 77025
(832) 204-5900
Gr: 6-12 | 604 students Avg. class size: 15 students Sports: 15 | Extracurrculars: 13 Tuition listed
Episcopal High School
Episcopal High School Photo
(Episcopal)
4650 Bissonnet St
Bellaire, TX 77401
(713) 512-3400
Gr: 9-12 | 846 students Avg. class size: 14 students Sports: 16 | Extracurrculars: 29 Tuition listed
Fort Worth Country Day
Fort Worth Country Day Photo - Fort Worth Country Day (FWCD) is a JK-12 private, independent, coeducational, nondenominational college-preparatory school located on approximately 100 acres in Fort Worth, Texas. The mission of Fort Worth Country Day School is to foster the intellectual, physical, emotional, and ethical development of capable students through an academically rigorous college preparatory program that integrates the arts and athletics.
(3)
4200 Country Day Lane
Fort Worth, TX 76109
(817) 302-3209
Gr: K-12 | 1,097 student Avg. class size: 16 students Sports: 16 | Extracurrculars: 26 Tuition listed
Greenhill School
Greenhill School Photo
4141 Spring Valley Road
Addison, TX 75001
(972) 628-5400
Gr: PK-12 | 1,322 student Avg. class size: 18 students Sports: 15 Tuition & acceptance rate listed
Headwaters School
Headwaters School Photo - Headwaters Students are Peacemakers, Advocates, Creators, and Thinkers ranging from 18 months to high school seniors.
Montessori School
(3)
807 Rio Grande
Austin, TX 78701
(512) 480-8142
Gr: PK-12 | 525 students Avg. class size: 20 students Sports: 4 | Extracurrculars: 10 Tuition listed
The Hockaday School
The Hockaday School Photo
All-girls
11600 Welch Road
Dallas, TX 75229
(214) 360-6526
Gr: PK-12 | 1,110 student Avg. class size: 16 students Sports: 17 Tuition & acceptance rate listed
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
Gr: 9-12 | 540 students Avg. class size: 17 students Sports: 17 | Extracurrculars: 12 Tuition & acceptance rate listed
The John Cooper School
The John Cooper School Photo - The Rock Math & Science Center
(11)
One John Cooper Drive
Spring, TX 77381
(281) 367-0900
Gr: PK-12 | 1,312 student Avg. class size: 18 students Sports: 14 | Extracurrculars: 21 Tuition & acceptance rate listed
Keystone School
Keystone School Photo - Keystone School Upper School Students
(6)
119 E Craig Place
San Antonio, TX 78212
(210) 735-4022
Gr: NS-12 | 491 students Avg. class size: 16 students Sports: 5 | Extracurrculars: 21 Tuition listed
The Kinkaid School - Head Of School Office
201 Kinkaid School Dr
Houston, TX 77024
(713) 243-5031
Gr: PK-12 | 1,435 student Avg. class size: 16 students Acceptance rate listed
Lakehill Preparatory School
Lakehill Preparatory School Photo
(3)
2720 Hillside Drive
Dallas, TX 75214
(214) 826-2931
Gr: K-12 | 390 students Avg. class size: 14 students Sports: 12 | Extracurrculars: 29 Tuition listed
Northstar School
Northstar School Photo - The Northstar sign greets you upon entry.
(5)
4620 Park Springs Blvd
Arlington, TX 76017
(817) 478-5852
Gr: 7-12 | 37 students Sports: 11 | Extracurrculars: 16 Tuition listed
The Oakridge School
The Oakridge School Photo - In the past five years, 100% of Oakridge's graduates have been accepted to four-year colleges.
(10)
5900 West Pioneer Parkway
Arlington, TX 76013
(817) 451-4994
Gr: PK-12 | 682 students Avg. class size: 15 students Sports: 15 | Extracurrculars: 47 Tuition & acceptance rate listed
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
Gr: PK-12 | 1,124 student Avg. class size: 16 students Sports: 16 Tuition & acceptance rate listed
The Post Oak School
The Post Oak School Photo - Middle School (D.C. trip)
Montessori School
(2)
4600 Bissonnet St
Bellaire, TX 77401
(713) 661-6688
Gr: NS-12 | 484 students Avg. class size: 28 students Sports: 7 | Extracurrculars: 16 Tuition & acceptance rate listed
Regents School Of Austin
Regents School Of Austin Photo - Since our first year of varsity athletics in 2000, Regents has won state championships in football (2010, 2006, 2003, 2002, and 2001), volleyball (2006) and cheerleading (2006) as well as numerous regional, bi-district and district titles in other sports. Enthusiastic participation is important as we continue to seek to honor God through our athletic program.
(Christian)
(6)
3230 Travis Country Circle
Austin, TX 78735
(512) 899-8095
Gr: K-12 | 1,080 student Avg. class size: 16 students Sports: 13 | Extracurrculars: 1 Tuition listed
St. Agnes Academy College Preparatory
St. Agnes Academy College Preparatory Photo - Come visit our new Science and Technology building!
All-girls (Catholic)
9000 Bellaire Blvd
Houston, TX 77036
(713) 219-5400
Gr: 9-12 | 952 students Avg. class size: 17 students Sports: 15 | Extracurrculars: 44 Tuition & acceptance rate listed
St. Andrew's Episcopal School (Southwest Parkway Campus)
St. Andrew's Episcopal School (Southwest Parkway Campus) Photo
(Episcopal)
5901 Southwest Pkwy
Austin, TX 78735
(512) 299-9700
Gr: 9-12 | 985 students Avg. class size: 16 students Sports: 17 | Extracurrculars: 54 Tuition listed
St. Francis Episcopal School
St. Francis Episcopal School Photo - St. Francis Episcopal School Piney Point Village Campus
(Episcopal)
335 Piney Point Road
Houston, TX 77024
(713) 458-6159
Gr: PK-12 | 875 students Avg. class size: 15 students Sports: 15 Tuition & acceptance rate listed
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
Gr: 1-12 | 924 students Avg. class size: 15 students Sports: 16 Tuition & acceptance rate listed
Saint Mary's Hall
Saint Mary's Hall Photo - Saint Mary's Hall
9401 Starcrest Dr
San Antonio, TX 78217
(210) 483-9100
Gr: PK-12 | 884 students Avg. class size: 15 students Sports: 21 | Extracurrculars: 23 Tuition listed
St. Michael's Catholic Preparatory School
(Catholic)
3000 Barton Creek Blvd
Austin, TX 78735
(512) 327-7755
Gr: PK-12 | 932 students Avg. class size: 15 students Sports: 14 | Extracurrculars: 14 Tuition listed
St. Stephen's Episcopal School
St. Stephen's Episcopal School Photo - The St. Stephen's Chapel at sunset
(Episcopal)
6500 St. Stephen's Drive
Austin, TX 78746
(512) 327-1213
Gr: 6-12 | 707 students Avg. class size: 17 students Sports: 24 | Extracurrculars: 25 Tuition & acceptance rate listed
Show 17 more private schools in Texas (out of 52 total schools)
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