About Us

Keystone International Schools: Empowering Global Citizens Through Education

Established in Istanbul in 2012, Keystone International Schools was founded by Sema Kızılkaya, a Canadian citizen with a passion for education dating back to 1991. Her guiding principle is simple yet profound: success is measured by the warmth in students’ hearts and the smiles on their faces as they remember their time at Keystone.

From its inception, Keystone has followed the Canadian education program, offering students the opportunity to receive an official Prince Edward Island diploma since 2021. This accreditation ensures that students, whether in Istanbul or Canada, receive the same quality education and are eligible for admission to universities worldwide. With a 99% acceptance rate to universities globally, Keystone students have the freedom to choose from a rich selection of institutions for their higher education journey.

Moreover, Keystone International Schools holds accreditation from the Western Association of Schools and Colleges (WASC), a testament to its commitment to maintaining high educational standards. Annually inspected and approved by WASC, Keystone ensures continuous improvement and excellence in education.

Additionally, Keystone is proud to be a member of ROUND SQUARE, joining elite schools worldwide in fostering holistic development and global citizenship. Through participation in collaborative projects and conferences, Keystone students engage with peers from diverse backgrounds, enriching their educational experience and broadening their perspectives.

At Keystone International Schools, we are dedicated to empowering students to become thoughtful, engaged global citizens who contribute positively to society. With a strong foundation in academic excellence, character development, and global awareness, our students are prepared to thrive in an interconnected world.

Nurturing Minds, Inspiring Futures: The Journey of Sema Kizilkaya and Keystone International Schools

Sema Kizilkaya

Sema Kizilkaya’s life story embodies a profound dedication to education and a fervent desire to shape the minds of future generations. Born and raised in Istanbul, her journey has been defined by a relentless pursuit of knowledge and a thirst for exploration beyond her hometown.

Sema’s educational journey began with a Marketing Degree from Yeditepe University in Istanbul, followed by an Early Childhood Education Diploma obtained in Vienna, Austria. These academic achievements laid the groundwork for her future endeavors in the field of education.

In 1991, fueled by her passion for learning, Sema founded a preschool and kindergarten named after her daughter, Doğa. For 16 years, she nurtured this institution, instilling a love for learning in countless young minds before passing its legacy to a larger educational chain. Seeking international exposure, she ventured to Ottawa, where she served as an assistant teacher at the Carleton District School Board. This experience broadened her horizons, exposing her to diverse teaching methodologies and operational frameworks.

Drawing from her extensive experience, Sema embarked on her next venture: the establishment of Keystone International School (K-12) for expatriate families, followed by the Kilittasi School Dual Program (K-8) catering to Turkish nationals. As CEO, Sema remains deeply involved in both institutions, ensuring the delivery of the highest standards of education.

In addition to her contributions to education, Sema’s creative spirit finds expression through writing. In 2010, she published her first children’s book, “Elden Ele” (“Handing it On”), inspired by a social responsibility project in the Muş district of Varto. She currently divides her time between Toronto and Istanbul.