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Founded in 1851, SEM is an extraordinary day and boarding school for girls from across Western New York, the United States, and the world. With its understanding of traditional and creative approaches to education in the 21st century, SEM inspires graduates to emerge from their high school experience as leaders, proud to shape society rather than be controlled or defined by it. They live and lead with energy, confidence, honor, and courage.

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Buffalo Seminary Front Entrance Doors


What makes SEM so special? Students, alums, parents and faculty share their stories.

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Your possibilities are endless. Pursue your dreams through SEMFlex.

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Our SEMFlex Program

Traditions and School Life

Both serious and fun traditions are at the core of our school culture.


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Traditions and School Life

Live at SEM - Our Boarding Program

SEM’s residential students live together in a beautiful community and neighborhood adjacent to the school.

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Live at SEM - Our Boarding Program

Summer @ SEM

6 weeks of summer fun for girls entering grades 4 through 8.

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Summer @ SEM

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News & Events

 Head of School, Helen Marlette, announces plans to retire

January 12, 2023
Dear SEM Community,

I write today to announce that I will retire as Head of Buffalo Seminary in June 2024. This is not a decision made lightly. I love my job and the opportunity to work with everyone associated with SEM. Over the years, I have been honored to work with remarkable and committed trustees on our Board. They have supported me and my vision in countless ways. SEM students are curious, kind, and talented; the faculty is brilliant and passionate about their work; the administrative team and staff are thoughtful and unbelievably hard-working; the parents are committed and engaged; and SEM graduates care deeply about the school and contribute to their communities throughout the world.



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