Hoshū Jugyō Kō: The Role of Japanese Supplementary Schools Abroad
For Japanese families living overseas, maintaining a connection to their native language and culture is often a top priority. This is where hoshū jugyō kō (補習授業校), or hoshūkō (補習校), play a vital role. These supplementary Japanese schools are designed for students who attend local day schools during the week but require additional instruction to keep pace with the Japanese national curriculum.
Unlike full-time schools, hoshūkō typically operate on weekends, after school, or during other non-standard hours. Their primary mission is to ensure that Japanese-born children can seamlessly re-adapt to the Japanese educational system upon returning to their home country.

Key Facts
- Purpose: To provide supplementary education for Japanese children attending local foreign schools.
- Global Reach: As of April 15, 2010, there were 201 supplementary schools across 56 countries.
- Curriculum: Based on the standards set by the Ministry of Education, Culture, Sports, Science and Technology (MEXT).
- Core Subject: The majority of instruction focuses on kokugo (Japanese language instruction).
- Government Support: MEXT provides subsidies and full-time teachers to schools with 100 or more students.
Evolution and Growth of Supplementary Schools
The landscape of overseas Japanese education has evolved significantly over the decades. In 1971, only 22 supplementary schools existed worldwide. By May 1986, that number grew to 112, serving 15,086 students with a staff of 1,144 teachers. By 1987, the count reached 120 schools.
This growth was supported by the Ministry of Education, Science, Sports and Culture (Monbusho), which in 1985 encouraged the establishment of hoshūkō in developed countries. In contrast, the government encouraged the creation of nihonjin gakkō (full-time Japanese day schools) in developing countries.
Academic Operations and Curriculum
Because hoshūkō operate on a limited schedule, they must be highly efficient. The curriculum follows the age-appropriate guidelines specified by MEXT, covering grades one through nine to align with Japan's compulsory education laws. While some schools also offer preschool and high school programs, the focus remains on core academic subjects.
Subject Distribution
While kokugo is the primary focus, students also study mathematics, social studies, and sciences. Due to the limited classroom hours, a significant portion of the mandated material is assigned as homework to ensure students stay on track with their peers in Japan.
Teacher Allocation and Funding
MEXT provides financial subsidies and assigns full-time teachers to schools with at least 100 students. The number of government-sent teachers scales with enrollment:
- 100+ students: 1 teacher
- 200+ students: 2 teachers
- 800+ students: 3 teachers
- 1,200+ students: 4 teachers
- 1,600+ students: 5 teachers
Regional Perspectives: North America and the UK
The United States
In the U.S., particularly in major metropolitan areas, the most common model is for children to attend American day schools during the week and hoshūkō on weekends. As of 2007, there were 85 such schools in the U.S., with approximately 12,500 Japanese nationals attending both systems—representing over 60% of Japanese children in the country.

Over time, these schools have adapted to serve permanent residents through keishōgo (heritage education) classes. Unlike the standard MEXT curriculum, heritage classes use curricula developed by local administrators to help students maintain their ethnic identity. By 2012, the majority of students in U.S. weekend schools were permanent residents rather than temporary expatriates.
The United Kingdom
In the UK, MEXT operates eight Saturday supplementary schools. As of 2013, 2,392 children were enrolled across various locations, including London, Cardiff, Edinburgh (Livingston), Leeds, Manchester (Lymm), Sunderland (Oxclose), Telford, and Hythe.
Comparative Enrollment Data
The adoption of supplementary schooling varies wildly by region. Data from 2013 highlights a stark difference between Asian and North American trends among Japanese-speaking children of Japanese nationality.
| Region | Attendance Rate (Japanese Nationals/First Language Speakers) |
|---|---|
| North America | 45% |
| Asia | 3.4% |
Frequently Asked Questions
What is the difference between a hoshūkō and a nihonjin gakkō?
A hoshūkō is a supplementary school that typically operates on weekends for students who attend local foreign schools. A nihonjin gakkō is a full-time Japanese day school.
Who decides the curriculum for these schools?
Most hoshūkō follow the curriculum specified by the Ministry of Education, Culture, Sports, Science and Technology (MEXT). However, heritage (keishōgo) classes for permanent residents often use curricula developed by the individual schools.
How are these schools funded?
Many schools rent facilities from other educational institutions. Those with more than 100 students may receive subsidies and teacher assignments from the Japanese government (MEXT).
Why do permanent residents attend these schools if they aren't returning to Japan?
Many permanent residents attend hoshūkō to maintain their ethnic identity and preserve their heritage language skills.