Admissions Contact

Our Team, Our Opening Hours and How to Reach Us

Greeting from the Principal

Dear parents,

A warm welcome to SIS Frankfurt! As the school principal, I greet you on behalf of our team. Since our establishment in 2020, we have been on a continuous journey of growth. In September 2023, we proudly opened our Gymnasium.

Our school is built on the values of sustainability, academic excellence, respect, and integrity. These principles shape our educational philosophy. We aim not only to impart knowledge but also to instill in our students a deep appreciation for respect and integrity. In an atmosphere of empathy and international-mindedness, we foster the development of responsible, globally-oriented individuals.

The opening of the Gymnasium marks a significant milestone. Alongside academic excellence, we emphasize the cultivation of the individuality and autonomy of each student. Within a supportive community, they can unfold and discover their strengths.

We invite you to actively participate in school life. Together, we shape the future of our students, molding them into responsible and empathetic individuals. Thank you for placing your trust in SIS Frankfurt. We look forward to getting to know you and contributing to the success story of your children.

Warm regards,
Aurelio Reyes Alcántara

Get to Know our School Management Team

Aurelio Reyes Alcántara


More about Aurelio Reyes Alcántara

Aurelio Reyes Alcántara


Aurelio Reyes was born in Mexico City and raised in multicultural environments, which instilled in him a deep appreciation for diverse cultures and viewpoints. He is fluent in Spanish, English, and German.

Aurelio Reyes pursued a degree in Mathematics at the National University in Mexico and later specialized in Mathematics Education. His commitment to education led him to earn certifications in school management, leadership, and instructional leadership from the Harvard Graduate School of Education and the Harvard Business School.

With more than 13 years of experience in education, Aurelio Reyes has held various roles in school leadership, including department head and IB Coordinator. Throughout his career, his primary focus has been on creating inclusive, nurturing, and intellectually stimulating environments where students can fully explore their potential through creativity and self-reflection, as well as feel empowered to embrace diversity, think critically, and become independent learners.

Outside his professional life, Aurelio Reyes finds joy in hiking and swimming, often immersing himself in nature. Additionally, he has a passion for literature, cinema, and photography.

Nadine El Housseiny-Auth

Head of Primary School

More about Nadine El Housseiny-Auth

Nadine El Housseiny-Auth

Head of Primary School

Having grown up in Egypt and Canada, Nadine El Housseiny-Auth was immersed in multicultural environments from a very young age and has hence developed a profound appreciation for cultural diversity and multilingualism.

After graduating with a Bachelor of Arts in German Literature and Journalism from Dalhousie University in Canada, Nadine pursued her passion for teaching and education. She has subsequently completed her PGCE in Bilingual Education at the University of Birmingham where she was able to deepen her understanding of the language and learning needs of bilingual learners. To further support her students’ holistic development, she has appreciated exploring child social and emotional well-being and has earned a certificate in Child Development with a focus on Behaviour and Mental Health from Stanford University.

Nadine joined the SIS Frankfurt since its establishment in August 2020 and has enjoyed actively contributing to its first exciting years. She has now taken on the role of Head of Primary School, looking forward to further strengthening her relationships and collaborations with all school community members, and prioritizing children’s individual needs and creating a safe, inspiring and respectful learning atmosphere that allows all students to thrive.

Teaching and Supervision Hours

At our day school, students are supervised from 7:30 a.m. to 6 p.m.


The exact lesson and supervision times vary between the different school levels.

Holiday Calendar 2023/24

The school adheres to the official school holiday calendar of Oberursel.



Start of academic year 04.09.2023
Autumn holidays 23.10.2023 - 28.10.2023
Christmas holidays 27.12.2023 - 13.01.2024
Movable holiday 12.02.2024
Easter holidays 25.03.2024 - 13.04.2024
Movable holiday (after Ascension Day) 10.05.2024
Movable holiday (after Corpus Christi) 31.05.2024
Summer holidays 15.07.2024 - 23.08.2024

You are invited! Have a look at our upcoming events.

No events found.

SIS Frankfurt

SIS Swiss International School

An den drei Hasen 34-36
61440 Oberursel

Phone: +49 6171 8875 8011



Office Opening Hours

Monday to Friday: 8 a.m. to 4 p.m.

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