Independence and Curiosity
Founded in 1993. Over 2,800 graduates.
Certified Montessori teachers nurture confidence and independence.
Renewal of Our Learning Environment and Class Structure
Due to the conclusion of our agreement with RED° TOKYO TOWER, the school has relocated from Tokyo Tower. At the same time, the school name has been changed from “Red Bambini Montessori International School” to “CASA ATLAS Montessori School“.
With this transition, parts of our school structure, including class organization, have been updated to provide a clearer progression of learning.
We will continue to offer a well prepared Montessori curriculum in a calm and focused environment in Tokyo.
About Casa Atlas Montessori School
CASA ATLAS Montessori School, founded in 1993 as Rainbow International Montessori School, began with just five students and has grown into a thriving learning community with over 2,800 graduates.
We provide a warm and thoughtfully prepared Montessori environment that nurtures curiosity, independence, and confident self expression while supporting each child’s individual growth.
Our Philosophy
Our Montessori approach encourages each child to explore, ask questions, and learn through hands-on experience. We support independence, curiosity, and a lifelong love of learning in a calm and respectful environment.
Our History
Since 1993, our school has continued to grow while staying true to Montessori principles developed by Dr. Maria Montessori. Over the years, we have supported thousands of families through early childhood and primary education.
Learning Environment
Our classrooms provide a warm and multicultural environment where children learn at their own pace through exploration and purposeful activity.
Teachers and Accreditation
Our Montessori-trained teachers guide each child with care and attention, supporting confidence, independence, and individual growth.
Outcomes and Community
We value strong relationships with families and support each child in developing confidence, independence, and respect for others.
"The goal of early childhood education is to awaken children‘s natural desire to learn."
Dr. Maria Montessori
Why Montessori Education?
Montessori education has been practiced around the world for more than a century and continues to support children across diverse cultures and communities. Its child-centered approach encourages independence, curiosity, concentration, and a lifelong love of learning.
Many individuals from a wide range of professional and creative fields have experienced Montessori education during their early years.
Prepared Learning Environment
Montessori classrooms are carefully prepared to support each child’s stage of development through hands-on learning and purposeful activity. Children are encouraged to explore independently, develop practical life skills, communicate with confidence, and build problem-solving abilities through daily experiences.
Teachers observe each child closely and provide guidance based on individual interests, readiness, and progress. This approach allows children to learn at their own pace while receiving appropriate support and new challenges throughout their learning journey.
We also share school updates, Montessori insights, and reflections from our principal and teachers about learning, child development, and daily life in the classroom.
Montessori classrooms look different for a reason. Every detail is...Learn More
Montessori education is a child-centered approach that nurtures independence, curiosity,...Learn More
A Child-Centered Montessori Environment Red Bambini Montessori International School is...Learn More
Our Montessori Classroom Structure
A Combined Age Approach to Support Individual Growth
While Montessori classrooms traditionally follow the 0–3 and 3–6 age group model, our school embraces a combined age approach that allows children to receive focused, individualized guidance while also benefiting from meaningful social interactions.
This structure supports each child’s developmental needs in the morning and encourages natural peer learning in the afternoon when age groups mix.
Across all classes, children experience a calm, respectful, and multicultural environment that nurtures independence, curiosity, and joyful learning.
Montessori Learning by Age and Stage
Mini Atlas Class
12 months – 2 years
A nurturing Montessori environment where children begin developing independence, movement, language, and confidence through guided exploration and purposeful activity.
Sunny Atlas Class
2 – 3.5 years
Children build concentration, practical life skills, and social awareness while growing independence and confidence in a calm and respectful environment.
Star Atlas Class
3.5 – 5 years
Children explore early literacy, mathematics, and practical life through hands-on Montessori learning that encourages curiosity, collaboration, and responsibility.
Sky Atlas Class
5 – 6.5 years
Children strengthen independence, critical thinking, and social awareness through advanced learning, collaborative projects, and purposeful work.
School Calendar
Our school calendar provides an overview of important dates, seasonal programs, and annual school events. The latest schedule updates and announcements will be shared with families as needed throughout the school year.
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After School Programs
Our after school programs provide children with additional opportunities to learn, explore, and build confidence in a supportive Montessori environment.
We offer a variety of programs designed to support academic development, creativity, communication skills, and independent learning for both Montessori and elementary school students in Tokyo.
After School
A nurturing Montessori environment where children begin developing independence, movement, language, and confidence through guided exploration and purposeful activity.
After School Studies
Our study support program includes homework guidance, mathematics, reading and writing, English learning, Montessori activities, and more. Teachers work closely with families to support each child’s individual learning needs.
Summer and Winter School
Seasonal programs are available during summer and winter breaks for both enrolled students and outside participants. Children can continue learning through hands-on activities, cultural experiences, and collaborative exploration.
Visit Our Montessori School
We welcome families to visit our Montessori school and experience our classrooms firsthand. School tours provide an opportunity to observe daily learning, meet our teachers, and learn more about our programs and community in Tokyo.
Tours are available by appointment on weekdays, and families are encouraged to visit together with their child. For more information or to arrange a school tour, please contact us through the inquiry form below.
