R International School is a Language School focused on real-world usage, not textbook perfection. We help learners develop language skills that work in actual business, daily life, and decision-making environments — where how you say something matters as much as what you say. Our approach goes beyond grammar and vocabulary. We focus on clarity, positioning, and nuance, so your message is delivered with confidence, accuracy, and the right level of professionalism.
All lessons are conducted online.
Our programs are designed to be flexible, structured, and accessible from anywhere.
Language should never be the reason you feel uncertain, misunderstood, or underestimated.
Our vision is to transform language from a set of rules into a Strategic Tool — one that allows you to use/express your ideas, intentions, and value clearly across cultures and professional environments, not just "understand" them. R International School supports individuals who operate internationally and need language skills that reflect who they are and where they stand.

Our online format allows learners worldwide to study together from anywhere in the world.
We believe consistency is essential in language learning, and flexible scheduling with easy access supports a stress-free environment that enables long-term commitment and sustainable progress.

We understand that your schedule isn’t fixed — and neither are our lessons. Sessions can be arranged flexibly to fit your work, travel, and time zone, making it easier to stay consistent even with a busy lifestyle.

Every three months, we conduct a level evaluation to assess each student’s progress. This includes a recap session and a one-on-one consultation to ensure accurate class placement and personalized lesson content.

Our lessons are designed around how language is actually used. Emails, meetings, chats, and real situations become learning material, so you can apply what you learn immediately.

Lessons can be conducted with bilingual support in Japanese and English, allowing for clear explanations, deeper understanding, and efficient progress without unnecessary confusion.
Our Kids Program is designed for elementary school students and is conducted entirely online.
At this time, we do not offer in-person lessons. Lessons focus on building a strong foundation in Japanese through structured and engaging group classes.
This program is designed for adults who want to improve their Japanese for daily life, travel, or personal growth. Lessons are fully online and can be customized based on your goals, level, and learning pace.
Designed for professionals working in Japanese or bilingual environments.
All lessons are conducted online with bilingual support when needed.
Our Kids Japanese Program is designed for elementary school–aged learners to build a strong foundation in Japanese through structured, engaging, and consistent online lessons.
We focus on developing all core language skills while maintaining a stress-free learning environment that supports long-term progress.
Lessons are conducted in small groups to encourage interaction, confidence, and steady development, while maintaining clear structure and progression.


Sakura is a symbol of new beginnings in Japan.
This class represents the first step in learning, where curiosity and confidence gently blossom.
・ Introduction to Japanese sounds, basic vocabulary, and simple sentence structures
・ Hiragana reading and writing
・ Basic listening and speaking practice
・Focus on building comfort and confidence with Japanese

In Japan, bamboo symbolizes strength, flexibility, and continuous growth.
This class focuses on developing a solid foundation through steady, step-by-step learning.
・Expanded vocabulary and grammar patterns
・Introduction to Kanji (age-appropriate)
・Improved sentence construction and reading comprehension
・Increased speaking practice through guided interaction

In Japan, momiji represents beauty at its peak.
Students refine their skills and express themselves confidently with clarity and precision.
・More complex grammar and sentence structures
・Reading short texts and writing simple paragraphs
・Enhanced listening comprehension
・Confident spoken communication with accuracy and clarity

JPST preparation is available as an optional add-on for students who have completed the core curriculum or require exam-focused support.
・Offered as specialized sessions
・Available through private or focused support formats
・Core program enrollment is required
このカテゴリの説明を追加
このカテゴリの説明を追加
このカテゴリの説明を追加
JPST lessons are offered as an optional add-on and require enrollment in a core program.
We provide 20% off for Siblings enrollment

Submit an online inquiry or application form.

Level check to determine appropriate placement.

– Placement into the suitable level and schedule

– Payment and registration completion

This program is designed for learners who want to use English confidently in real-life situations.
Our lessons focus on practical communication skills for work, international interactions, travel, and daily life—rather than textbook-only learning.
We emphasize not only grammar and vocabulary, but also how to communicate effectively and naturally in real conversations.
Students learn how to express ideas clearly, appropriately, and professionally.
Because every learner has different goals and backgrounds, we tailor each program to individual needs, experience levels, and lifestyles—making it easier to stay consistent and motivated.
All lessons are conducted online, allowing busy professionals to learn from anywhere without disrupting their daily schedules.
Our goal is to help you move beyond hesitation and build the confidence to use English as a practical tool in your life.


Sakura is a symbol of new beginnings in Japan.
This class represents the first step in learning, where curiosity and confidence gently blossom.
・ Introduction to Japanese sounds, basic vocabulary, and simple sentence structures
・ Hiragana reading and writing
・ Basic listening and speaking practice
・Focus on building comfort and confidence with Japanese

In Japan, bamboo symbolizes strength, flexibility, and continuous growth.
This class focuses on developing a solid foundation through steady, step-by-step learning.
・Expanded vocabulary and grammar patterns
・Introduction to Kanji (age-appropriate)
・Improved sentence construction and reading comprehension
・Increased speaking practice through guided interaction

In Japan, momiji represents beauty at its peak.
Students refine their skills and express themselves confidently with clarity and precision.
・More complex grammar and sentence structures
・Reading short texts and writing simple paragraphs
・Enhanced listening comprehension
・Confident spoken communication with accuracy and clarity

Business class is available as an optional add-on for students who have completed the core curriculum or require exam-focused support.
・Offered as specialized sessions
・Available through private or focused support formats
・Core program enrollment is required

Every three months, students undergo a level evaluation to assess their progress and confirm placement in the most suitable class.

Our online program is designed to replicate the sense of trust and connection found in in-person learning, ensuring that children feel safe, supported, and at ease with their instructors.

Lesson focus is tailored to each student’s progress, based on evaluation results and insights from one-on-one consultations.
このカテゴリの説明を追加
このカテゴリの説明を追加
このカテゴリの説明を追加
JPST lessons are offered as an optional add-on and require enrollment in a core program.
We provide 20% off for Siblings enrollment

Submit an online inquiry or application form.

Level check to determine appropriate placement.

– Placement into the suitable level and schedule

– Payment and registration completion

Our Private Lessons are fully customized 1-on-1 sessions designed to meet each student’s specific goals, level, and learning pace.
Whether you are a complete beginner or an advanced learner, lessons are structured to deliver fast, precise, and tangible results.
Business Japanese is highly advanced and requires strong language control.
Students who have not completed the Standard level may study Business Japanese exclusively through Private Lessons.
Private lessons provide a safe and comfortable environment where they can build confidence while learning at their own pace. We emphasize trust, consistency, and gentle guidance to ensure long-term progress.

Regardless of the ages and levels.
We provide 20% off for Siblings enrollment
Osaka, Japan
Mon-Fri 10AM-6PM PST
弊社ではCookieを使用してWebサイトのトラフィックを分析し、Webサイトでのお客様の体験を最適化しています。弊社によるCookieの使用に同意されると、お客様のデータは他のすべてのユーザーデータと共に集計されます。