One World International School (OWIS) Seperator, divider, baner, stripe

World-Class International Education In Japan And Beyond

One World International School (OWIS) Offers Early Childhood To Grade 12 International School Education To Over 70,000+ Students Across 4 Countries

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Years of legacy in quality teaching and learning

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OWIS campuses across Asia and the Middle East
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Nationalities of students
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IB World Toppers (45/45 perfect scorers)
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About OWIS

One World International School (OWIS) is a global network of international schools with 11 campuses worldwide, including multiple campuses in Japan.

At OWIS, students benefit from inquiry-based learning, strong academic foundations, and a truly international environment. Our experienced educators encourage curiosity, critical thinking, and active participation, helping every child become a confident, independent learner.

At our campuses in Japan, we combine academic excellence with a student-centred approach, ensuring each child receives the support and encouragement they need to thrive. Through engaging classroom experiences, meaningful collaboration, and a focus on character development, students develop the skills, confidence, and global outlook needed for success in an ever-changing world.

Nurturing future-ready learners, global citizens, and tomorrow’s leaders.

OWIS Campuses In Japan​

Select and Explore One World International School (OWIS) Osaka Campus Image/Creative
Select and explore One World International School (OWIS) Tsukuba Campus Image/Creative

OWIS Education Benefits:

Personalised & Student-Centered Learning

The Inquiry-based project work allows students to focus on their strengths, pursue their passions, and direct their own educational journey.

Also, our optimal class sizes of 18 or less ensure every student receives the individual attention they need to achieve their full potential.

Multicultural & Inclusive Environment

Step into an immersive international environment where multiculturalism is celebrated, providing a truly global perspective for your child’s education.

 Our culture of kindness, inclusivity, and community as well as our comprehensive student support services, help everyone at OWIS Osaka feel a sense of belonging and school identity. 

Certified & Experienced Teachers

All our faculty are certified with teaching qualifications of a bachelor’s or higher, are experienced in delivering education, and have been trained in the inquiry-based teaching methodology.

OWIS teachers are trained to assist students progress academically, as well as, develop socially, emotionally, and personally.

Strong English Language Support

Our Academic English Preparation (AEP) programme, dedicated transition support, and After-School English Clubs provide a clear pathway for students to build confidence and proficiency in English. Combined with our immersive English-speaking environment, students develop language skills naturally through meaningful daily interactions and learning experiences.

By the time they graduate, OWIS students are equipped with strong English communication and academic skills needed to thrive at leading universities and in an increasingly global world.

Learn more about our English language support programmes at OWIS campuses in Japan.

Start Your Child’s English Success Story With OWIS

See What Parents Have to Say About Our Campus

Each day we have been greeted by teachers with warm smiles and genuine kindness – this left a deep impression on us. What touched us even more is how many teachers already remembered my son Eric & Ethan’s names. Their homeroom teacher, Ms Mariko & Ms Michelle, have offered consistent encouragement and recognition, which has deeply reassured both our children and us as parents. We truly believe they will continue to thrive with this kind of support.

Arrow Xia
Parent of Students in Early Childhood and Primary School

Thanks to the teachers, we truly feel that enrolling in this school was the right decision. The UOI and presentation-based learning, which cannot be experienced in Japanese schools, are especially valuable. In addition, interacting with children from different countries every day provides positive stimulation and helps broaden his perspective, allowing him to absorb a wide range of ways of thinking.

Akiko Matsuo
Parent of Students in Primary School

OWIS’s legacy and big brand presence were a focal point for us. Our son has really enjoyed the strong exposure to science, and today, I saw his presentation on economics. He knows so much more about economics than even I do, and he is just 10 years old!

Rahul Kaushik
Parent of Students in Early Childhood and Primary School

After attending OWIS Osaka for a year, he has become more self-motivated in both soccer and academics.
The teachers are highly qualified, and it’s great that he can receive overseas-style education while living in Japan.

Kumiko Sakuhara
Parent of Students in Primary School

As parents, we truly value OWIS’s holistic education approach built around the IB philosophy. Through inquiry-based learning, the school connects knowledge with the real world, helping children develop critical thinking, problem-solving skills, and social-emotional growth. The teachers are both professional and caring, with a strong focus on personalised support. The diverse international environment also helps children strengthen their language skills and learn to understand different cultures with an open and inclusive mindset, building a strong foundation for the future.

Yanan Diao family photo - Positive Parent Testimonial for OWIS Osaka
Yanan Diao
Parent of Students in Primary School

I chose this school not only because it offers an educational environment where students can thoroughly develop their English skills, but also because I sensed a school culture that values freedom and respects students’ independence.

Kazuya Hosokawa
Parent of Students in Primary School

Although it’s a newly established school, the teachers are very responsible and place great emphasis on academics. With homework and monthly tests, we’ve seen clear progress in our child. In addition, the extracurricular activities are rich and diverse. At our school’s Spring Carnival in March, there were all kinds of delicious food, games, small animals, and industry experts celebrating together with teachers, students, and parents. It was absolutely delightful! Even a month later, our child still can’t stop talking about it.

Wang Ying family photo - Positive Parent Testimonial for OWIS Osaka
Wang Ying
Parent of Students in Secondary School

We chose OWIS to teach our daughter both English and Japanese. Your school came highly recommended for our education journey. We wanted and encouraged a hybrid education as our daughter will also go to school in the US. Thank you so much for including us!

Joseph Morris, Shinri Matsuoka
Parent of a Early Childhood Student

My child has been studying in an English-language environment at other international schools since kindergarten. Although my child briefly attended a public elementary school, he or she was determined to continue learning in an English-language environment. After doing a lot of research, we discovered OWIS. We chose OWIS because of its curriculum, which stimulates children’s curiosity, and its comprehensive support system. We also felt that the newly built outdoor facilities would provide plenty of opportunities for physical activity.

Mio Kato Family - Positive Parent Testimonial for OWIS Osaka
Mio Kato
Parent of Students in Primary School

We came across OWIS while searching online and decided to choose it because we felt that the curriculum was strong and the teachers friendly and reliable. Our child is also looking forward to starting in a new enviroment while attending this school.

Yoko San Family photo - Positive Parent Testimonial for OWIS Osaka
Kobayashi Yoko
Parent of Students in Secondary School

You guys ROCK! Thank you so much for supporting Food Bank Kansai and spreading the word.

American Chamber of Commerce - Japan
Keizo Yamada
Executive Director of the American Chamber Of Commerce Japan (ACCJ)

We can help your child by:

Learn from caring and experienced educators

Build confidence through inquiry and student-led learning

Discover their passions through diverse extracurricular activities

Develop respect, empathy, and strong social skills

OWIS's Educational Model

Rather than following a rigid framework, our approach emphasises concept development across subject areas to make learning relevant and meaningful beyond the classroom.

World-Class academics and education being taught at One World International School. A secondary school student read a textbook and thinks deeply (thinking)

One with the World

By exploring global perspectives and real-world challenges, we empower students to become responsible global citizens who contribute positively to an interconnected world.

Learning

Through inquiry-based and student-centred learning, we inspire curiosity, critical thinking, and a lifelong love of learning.

Collaboration

By working together on weekly collaborative projects across cultures and perspectives, students develop empathy, communication skills, and the ability to contribute meaningfully to shared goals.

Service

Through meaningful contributions to charitable initiatives, the school community, and the local neighbourhood, we encourage students to become aware of the needs around them and to respond with empathy and action.

Relationships

Through strong relationships built on respect, trust, and empathy, we create a supportive community where every student feels valued and empowered to thrive.

Values

Resilience, open-mindedness, humility, and self-belief form the foundation of our character development, empowering students to thrive and make a positive impact on the world around them.

Proud Member of the Global Schools Group (GSG)

The Global Schools Group is a chain of K-12 schools headquartered in Singapore. The organization was founded in 2002 with the goal of providing affordable, high-quality education to international communities worldwide. Nearly two decades later, the group’s schools have received more than 650 national and international awards for academic excellence.

The OWIS Story

Since opening in 2008, OWIS has grown into a thriving international school community, expanding across multiple countries and becoming part of the renowned Global Schools Group (GSG).

2008
OWIS's first campus opens at Upper Changi Road in Singapore. The school quickly gains a reputation for its intimate and compassionate environment
2012
Upper Changi Campus gets accreditation for the International Baccalaureate, Primary Years Programme (IB-PYP), an inquiry-based programme for learners aged 3-12.
2015
We are acquired by Global Schools Group (GSG).
2017
We apply for, and win, a government tender to set up a moderately-priced international school on an expansive campus called OWIS Nayang Campus.
2019
OWIS in Upper Chengai gets accreditation for the IB DP from the IB Foundation. Meanwhile, within just two years, our new Nanyang campus welcomes more than 1200 learners.
2021
We are awarded a 4-year EduTrust Certification from the Committee for Private Education, and the brand new OWIS Suntec Campus Opens its doors.
2023
OWIS opens its first Japan campus in Osaka, alongside a new smart campus in Singapore named the Digital Campus.
2025
OWIS Tsukuba launches in Ibaraki prefecture, establishing OWIS as a successful, growing brand across Japan.

Frequently Asked Questions

OWIS Japan offers an inquiry-based international curriculum aligned with globally recognised frameworks such as the IB pathway, focusing on critical thinking, collaboration, and real-world learning. The curriculum is delivered in English and supports students from early childhood through Grade 12.

OWIS operates campuses in Osaka and Tsukuba, providing modern learning environments with small class sizes, interactive classrooms, and dedicated spaces for arts, sports, and collaborative learning. These campuses are designed to support inquiry-based education and student wellbeing.

OWIS Japan offers structured English support programmes such as Academic English Preparation (AEP), transition programmes, and immersive English learning environments to help non-native speakers build confidence and succeed academically.