St. Michael's School Photo - Nestled on three acres in east-central Tucson, St. Michael's School blends academic excellence with an open, spiritual atmosphere. Designed in Pueblo Revival style by famed Swiss-born architect Josias T. Joesler, our campus reflects the warmth and beauty of the Southwest, creating a space where students feel inspired, connected, and ready to learn.

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

For the 2025-26 school year, there are 13 private schools belonging to National Association of Independent Schools (NAIS) serving 3,063 students in Arizona. You can also find more schools membership associations in Arizona.
The top ranked private schools belonging to National Association of Independent Schools (NAIS) in Arizona include The Orme School, Verde Valley School, and St. Michael's School.
The average acceptance rate is 79%, which is lower than the Arizona private school average acceptance rate of 87%.
31% of private schools belonging to National Association of Independent Schools (NAIS) in Arizona are religiously affiliated (most commonly Catholic and Episcopal).

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

School
Location
Quick Facts
The Gregory School
The Gregory School Photo - The Gregory School, as a diverse learning community, challenges and supports students to achieve excellence in character, scholarship, leadership, and innovation and prepares them to make a positive impact in the world through pursuing their passions, appreciating and creating beauty, and solving problems.
(11)
3231 N Craycroft Rd
Tucson, AZ 85712
(520) 327-6395
Gr: 5-12 | 369 students Avg. class size: 15 students Sports: 11 | Extracurrculars: 35 Tuition listed
St. Michael's School
St. Michael's School Photo - Nestled on three acres in east-central Tucson, St. Michael's School blends academic excellence with an open, spiritual atmosphere. Designed in Pueblo Revival style by famed Swiss-born architect Josias T. Joesler, our campus reflects the warmth and beauty of the Southwest, creating a space where students feel inspired, connected, and ready to learn.
(Episcopal)
(15)
602 N Wilmot Rd
Tucson, AZ 85711
(520) 722-8478
Gr: PK-8 | 277 students Avg. class size: 14 students Sports: 5 | Extracurrculars: 7 Tuition & acceptance rate listed
All Saints' Episcopal Day School
All Saints' Episcopal Day School Photo - The sixth grade class trip to Bisbee
(Episcopal)
6300 N Central Avenue
Phoenix, AZ 85012
(602) 274-4866
Gr: PK-8 | 514 students Avg. class size: 16 students Sports: 6 | Extracurrculars: 4 Tuition & acceptance rate listed
Green Fields School
Green Fields School Photo - View of the Green Fields Center for Performing Arts
(4)
6000 N Camino De La Tierra
Tucson, AZ 85741
(520) 297-2288
Gr: K-12 Avg. class size: 12 students Sports: 8 Tuition listed
International School of Arizona
International School of Arizona Photo
Special Program Emphasis
(5)
9522 E. San Salvador Dr.
Scottsdale, AZ 85258
(480) 874-2326
Gr: NS-8 | 371 students Avg. class size: 14 students Sports: 1 | Extracurrculars: 8 Tuition & acceptance rate listed
International School Of Tucson
International School Of Tucson Photo - When science hits the roof!!
Special Program Emphasis
(4)
1701 E Seneca Street
Tucson, AZ 85719
(520) 406-0552
Gr: NS-8 | 284 students Avg. class size: 16 students Sports: 2 | Extracurrculars: 7 Tuition listed
Lourdes Catholic School
(Catholic)
(1)
555 E Patagonia Hwy
Nogales, AZ 85621
(520) 287-5659
Gr: PK-12 | 282 students
New Way Academy
Special Education School
5048 East Oak Street
Phoenix, AZ 85008
(602) 389-8600
Gr: K-12 | 260 students Avg. class size: 9 students Sports: 9 | Extracurrculars: 6 Tuition & acceptance rate listed
The Orme School
The Orme School Photo - Caravan offers a unique outdoor adventure and academic program for students. Led by faculty, class-sized trips explore Southwest's stunning landscapes, diverse cultures, and rich history. Camping in National Parks or wilderness, students gain outdoor skills and delve into the region's natural and human history. Caravan grants academic credits for graduation.
1000 Orme School Rd.
Mayer, AZ 86333
(928) 632-1566
Gr: 8-12 Avg. class size: 9 students Sports: 16 | Extracurrculars: 12 Tuition & acceptance rate listed
St. Francis Of Assisi School
(Catholic)
700 W 18th St
Yuma, AZ 85364
(928) 782-1539
Gr: PK-8 | 244 students Tuition listed
Verde Valley School
Verde Valley School Photo - Write, score and perform an original musical. Create your own violin in welding class and play it with the VVS rock or jazz band! Our approach to the arts is student-centered, performance-based and quite unique.
3511 Verde Valley School Road
Sedona, AZ 86351
(928) 284-2272
Gr: 9-12 | 99 students Avg. class size: 12 students Sports: 17 | Extracurrculars: 5 Tuition & acceptance rate listed
3225 N Craycroft Rd
Tucson, AZ 85712
(520) 795-0008
Gr: NS-5 | 154 students Avg. class size: 18 students Extracurrculars: 11 Tuition & acceptance rate listed
Summit School
Summit School Photo - Toddler through 8th grade Nationally Accredited
(6)
4515 East Muirwood Dr
Phoenix, AZ 85048
(480) 403-9500
Gr: NS-8 | 211 students Avg. class size: 16 students Sports: 5 | Extracurrculars: 11 Tuition & acceptance rate listed

Recent Articles

Transferring from Public to Private School Mid-Year: What to Expect
Transferring from Public to Private School Mid-Year: What to Expect
Considering a mid-year transfer from public to private school? Learn what to expect with admissions, academic placement, social adjustment, and financial aid to ensure a smooth transition.
A Guide to Day vs. Boarding School: Which Is Right for Your Family
A Guide to Day vs. Boarding School: Which Is Right for Your Family
Discover the key differences between day and boarding schools to determine the best fit for your child. Explore benefits, costs, lifestyle factors, and questions to help guide your family’s decision.
The A to Z of Private Schools 2025
The A to Z of Private Schools 2025
Explore the A to Z of private schools in 2025—from admissions to tuition—offering parents and educators clear insights into today’s options.