Stacker compiled a list of the best private high schools in the Austin metro area using data from the Niche. Niche uses seven weighted factors for its rankings. A majority of the score is based on academics, but other factors include culture and diversity; sports; clubs and activities; resources; and surveys of parents, teachers, and students.

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#25. Fusion Academy Austin

- Location: Austin, TX
- Enrollment: 159 (3:1 student to teacher ratio)
- Niche grade: B+

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#24. Academy of Thought and Industry at Austin

- Location: Austin, TX
- Enrollment: 43 (6:1 student to teacher ratio)
- Niche grade: A minus

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#23. San Juan Diego Catholic High School

- Location: Austin, TX
- Enrollment: 127 (11:1 student to teacher ratio)
- Niche grade: A minus

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#22. Summit Christian Academy - Cedar Park, TX

- Location: Cedar Park, TX
- Enrollment: 302 (9:1 student to teacher ratio)
- Niche grade: A minus

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#21. Huntington-Surrey Preparatory School

- Location: Austin, TX
- Enrollment: 34 (3:1 student to teacher ratio)
- Niche grade: A minus

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#20. Grace Academy of Georgetown

- Location: Georgetown, TX
- Enrollment: 359 (11:1 student to teacher ratio)
- Niche grade: A

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#19. Sterling Classical School

- Location: Leander, TX
- Enrollment: 283 (not available student to teacher ratio)
- Niche grade: A

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#18. St. Mary's Catholic School

- Location: Taylor, TX
- Enrollment: 274 (8:1 student to teacher ratio)
- Niche grade: A

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#17. AESA Prep Academy

- Location: Austin, TX
- Enrollment: 146 (6:1 student to teacher ratio)
- Niche grade: A

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#16. Concordia High School

- Location: Pflugerville , TX
- Enrollment: 117 (9:1 student to teacher ratio)
- Niche grade: A

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#15. Round Rock Christian Academy

- Location: Round Rock, TX
- Enrollment: 711 (9:1 student to teacher ratio)
- Niche grade: A

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#14. San Marcos Academy

- Location: San Marcos, TX
- Enrollment: 318 (8:1 student to teacher ratio)
- Niche grade: A+

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#13. Brentwood Christian School

- Location: Austin, TX
- Enrollment: 679 (12:1 student to teacher ratio)
- Niche grade: A+

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#12. Hill Country Christian School of Austin

- Location: Austin, TX
- Enrollment: 602 (12:1 student to teacher ratio)
- Niche grade: A+

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#11. Austin Tennis Academy College Prep

- Location: Austin, TX
- Enrollment: 38 (4:1 student to teacher ratio)
- Niche grade: A+

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#10. Regents School of Austin

- Location: Austin, TX
- Enrollment: 1,079 (10:1 student to teacher ratio)
- Niche grade: A+

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#9. Austin Waldorf School

- Location: Austin, TX
- Enrollment: 415 (10:1 student to teacher ratio)
- Niche grade: A+

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#8. St. Dominic Savio Catholic High School

- Location: Austin, TX
- Enrollment: 414 (13:1 student to teacher ratio)
- Niche grade: A+

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#7. Hyde Park Schools

- Location: Austin, TX
- Enrollment: 808 (11:1 student to teacher ratio)
- Niche grade: A+

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#6. Headwaters School

- Location: Austin, TX
- Enrollment: 500 (6:1 student to teacher ratio)
- Niche grade: A+

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#5. St. Michael's Catholic Preparatory School

- Location: Austin, TX
- Enrollment: 918 (7:1 student to teacher ratio)
- Niche grade: A+

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#4. Griffin School

- Location: Austin, TX
- Enrollment: 160 (5:1 student to teacher ratio)
- Niche grade: A+

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#3. St. Andrew's Episcopal School

- Location: Austin, TX
- Enrollment: 989 (6:1 student to teacher ratio)
- Niche grade: A+

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#2. Austin Peace Academy

- Location: Austin, TX
- Enrollment: 338 (10:1 student to teacher ratio)
- Niche grade: A+

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#1. St. Stephen's Episcopal School

- Location: Austin, TX
- Enrollment: 712 (8:1 student to teacher ratio)
- Niche grade: A+