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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

Latest Story

News & Events

SEM Students Win Awards in Technology
Three SEM computer science students were recently awarded National Center for Women & Information Technology for their pursuits in STEM. Andrea '23 is an affiliate winner along with Henrietta '26, and Laura '23 is an affiliate honorable mention. 
The NCWIT Award for Aspirations in Computing (AiC) honors 9th - 12th grade women, genderqueer, or non-binary students for their computing-related achievements and interests, and encourages them to pursue their passions. With over 3,400 applicants, award recipients are selected based on their aptitude and aspirations in technology and computing, as demonstrated by their computing experience, computing-related activities, leadership experience, tenacity in the face of barriers to access, and plans for post-secondary education.
Our students have the resources to pursue their interest in STEM through our four-year computer science program. We provide students the opportunity to study different facets of computer science, including cybersecurity, artificial intelligence, and game design. Learn more about the program by visiting the CS page on our website!