List of Top 10 Best Private Schools in the U.S. (State-Wise Rankings 2025)

Choosing the right private school can shape a student’s academic journey and future success. In 2025, several private institutions across the United States have stood out for their exceptional academic programs, experienced faculty, competitive college placement, and strong values-based education. These schools offer a blend of rigorous academics, extracurricular excellence, and personalized learning environments that nurture leadership, creativity, and character. 

From historic boarding schools in New England to innovative day schools on the West Coast, each institution has its unique strengths. Based on the latest rankings by Niche, this overview highlights the top five private schools in the country, including Groton School, Choate Rosemary Hall, The College Preparatory School, St. Mark’s School of Texas, and Riverdale Country School, all known for setting national standards in education.

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Top Private Schools in the U.S.: State-Wise (2025)

Here are the top private schools in the U.S. based on state-wise ranking:

Top 5 Private Schools in the U.S.

Here are the top 5 private schools explained in detail: 

1. Groton School - Massachusetts

Groton School, located in Groton, Massachusetts, is one of the most prestigious boarding schools in the United States. Known for its rigorous academics, historic legacy, and emphasis on character and service, Groton offers a classical curriculum and fosters leadership among its students. Its small class sizes and strong mentorship culture make it a top choice for students aiming for elite colleges.

2. Choate Rosemary Hall - Connecticut

Choate Rosemary Hall, based in Wallingford, Connecticut, is a coeducational boarding school with a national reputation for excellence. It offers a challenging academic program, including signature courses in science and global studies. Known for innovation and diversity, Choate’s alumni include world leaders, entrepreneurs, and public figures, and it consistently ranks among the top five private schools in the U.S.

3. College Preparation School - California

 Located in Oakland, California, the College Preparation is constantly in the state as the top private high school. It is a day school known for its intellectually provocative environment and dedication to test-based learning. Along with a strong Liberal Arts Foundation and a close-knit academic community, the college prep sends a high percentage of its graduates to the Ivian League and top-level universities. 

4. St. Mark School of Texas - Texas 

St. Mark School of Texas, an all-boys at Dallas, is recognized for its commitment to educational excellence and leadership development. With a strong emphasis on integrity, service, and intellectual curiosity, the school nourishes the well -round students designed for success in both higher education and life. It is especially known for its advanced STEM programs and debate and robotics teams.

5. Riverdale Country School - New York

 Located at Riverdale Country School, Bronx, New York, is one of the major K-12 institutions of the country. It combines rigorous academics with an further thinking approach to education, focusing on character development, emotional intelligence and community responsibility. Riverdale offers a wide range of academic and additional opportunities and is known to prepare students for both top universities and thoughtful citizenship.