Japan's School Year: April Start Dates and Terms Explained
Japan's school year runs from April 1 to March 31, the reverse of the September-start calendar most families relocating from abroad are used to.1 Getting the timing wrong can mean a child joins a Japanese classroom mid-stream, after routines and friend groups are already in place.
Procedures, fees, and requirements can change. Confirm current details at the Ministry of Education, Culture, Sports, Science and Technology (MEXT) website, or with your local city, ward, or town board of education for term dates, break dates, and JSL support specifics.
Overview
The April 1 to March 31 school year is set by Article 59 of the School Education Act Enforcement Regulation (学校教育法施行規則, Gakkō Kyōiku Hō Shikō Kisoku), a MEXT ministerial ordinance.1 It applies to every level of schooling, from elementary school through university.
This is a fixed statutory rule, not a local custom. It only changes if the ordinance itself is amended, and that provision has not been amended.1
For the tier structure that sits inside this calendar, six years of elementary school, three of junior high school, three of high school, and four of university, see the companion article on Japan's 6-3-3-4 School System. This article covers the calendar itself: terms, breaks, and what a mid-year arrival means for enrollment.
Everything below the April-to-March baseline is administrative rather than statutory. Term boundaries, break dates, the entrance-ceremony date, and Japanese-language support levels are all decided locally and vary by municipality.
The Three-Term Structure
Only the April 1 to March 31 school year itself is fixed by national statute.1 Whether an individual school divides that year into two terms or three is a separate decision, delegated to the local board of education or, within the board's own rules, to the school principal, under Article 29 of the School Education Act Enforcement Order.23
Many schools still divide the year into three terms, the pattern this article illustrates below, but a school's board of education can adopt a two-term system instead. Confirm your specific school's structure rather than assuming three terms apply everywhere.
Both municipal examples used in this article, Yokohama City and Shinjuku Ward, use the traditional three-term structure, which remains common nationally even though it is not mandated.24 The rest of this section describes that traditional pattern: a first term from April to summer break, a second term from September to winter break, and a third term from January to spring break.
The traditional three-term pattern, illustrated below, alternates instructional terms with three breaks across the year.
First Term: April to Summer Break
The first term opens with the nyūgakushiki (入学式), the formal entrance ceremony held in early April, and runs into summer break.4 Summer break (natsuyasumi, 夏休み), called 夏季休業日 (kaki kyūgyōbi) in municipal regulations, typically starts in the second half of July and runs through most of August, though exact dates are set locally.
The table below shows this from two example municipalities. These are illustrative examples, not a nationwide figure; confirm dates with your own city, ward, or town board of education.
| Municipality | Summer break | Winter break | Spring/year-end break | As of | Source |
|---|---|---|---|---|---|
| Yokohama City | Jul 21–Aug 26 | Dec 26–Jan 6 | Mar 26–Mar 31 | Regulation last amended 2023-03-24 | 2 |
| Shinjuku Ward, Tokyo | Jul 21–Aug 31 | Dec 26–Jan 7 | Late Mar–early Apr | Page updated 2026-01-22 | 4 |
Yokohama's dates are current as of the regulation's last amendment (as of 2023-03-24; confirm current figures with Yokohama City's Board of Education). Shinjuku Ward's dates are current as of the page's last update (as of 2026-01-22).
Yokohama's Board of Education announced plans to extend summer break through August 31 starting in fiscal year 2027, citing extreme-heat safety concerns, while keeping annual instructional days at roughly 200 (as of 2026-04-15).5 This change was not yet in effect at the time of writing.
Second Term: September to Winter Break
The second term begins in September and runs to winter break.4 Winter break (fuyuyasumi, 冬休み), called 冬季休業日 in municipal regulations, spans the turn of the calendar year, from late December into the first week of January, as shown in the table above.
Third Term: January to Spring Break
The third term begins in January and runs through the end of the school year in March.4 Spring break (haruyasumi, 春休み), formally the gakunenmatsu kyūgyōbi (学年末休業日, "year-end break"), closes out the school year in the second half of March and leads into the following year's nyūgakushiki.
| Term | Japanese | Notes |
|---|---|---|
| First / second / third term | 1学期・2学期・3学期 (ichi-gakki, ni-gakki, san-gakki) | The traditional three-term division illustrated above24 |
| Summer / winter / year-end break (formal) | 夏季休業日・冬季休業日・学年末休業日 | Terms used in municipal regulations2 |
| Summer / winter / spring break (everyday) | 夏休み・冬休み・春休み (natsuyasumi, fuyuyasumi, haruyasumi) | Same periods, everyday usage |
| Entrance ceremony | 入学式 (nyūgakushiki) | Formal first day of the school year, held in early April4 |
When a Family Arrives Mid-Year
A child who arrives outside a term boundary joins a term already underway. Japanese public schools accept transfer students at any point in the year, not only at term starts.67
Entering a Term Already in Progress
A child arriving mid-year enrolls into whichever term is already in progress rather than waiting for the next term boundary.67 Enrollment runs through the family's local ward, city, or town office, which registers the child's residency and assigns a school.67
The notification document issued at this step is a municipal-level document, and its name is not standardized nationwide. Shinjuku Ward calls it the nyūgaku tsūchisho (入学通知書, "enrollment notification") for both Japanese and foreign-national children (as of the source page's current content; confirm current terminology with Shinjuku Ward's Board of Education).6
Edogawa Ward, by contrast, calls the same type of document the tennyūgaku tsūchisho (転入学通知書, "transfer-enrollment notification") (as of the source page's current content).7 Neither name is wrong; ward offices use their own terminology, so confirm the term your ward uses rather than expecting one nationwide name.
The general mechanics look the same regardless of which document name applies, as shown below.
Who Manages the Integration
The receiving school's homeroom teacher (tannin, 担任) coordinates a newly arrived child's day-to-day settling-in.6 This is standard classroom practice described in ward-level transfer guidance, not a distinct statutory role.6
For foreign-national children specifically, Shinjuku Ward's procedure adds a school interview (面接, mensetsu) before the enrollment notification is issued, a step not described for Japanese-national transfers in the same source (as of current page content).6 Other municipalities may or may not require an interview step, and this should not be assumed nationwide.
Grade placement generally follows age rather than language ability or academic readiness, the same age-cohort rule covered in Japan's 6-3-3-4 School System. A school may, at its own discretion, place a child in a grade below their age-appropriate level when the child clearly lacks the foundation, such as Japanese-language ability, to receive that grade's instruction immediately.8
A parallel, longer-standing version of this same discretionary allowance exists for Japanese children returning from abroad (kikokushijo, 帰国子女), where a temporary lower-grade placement can be reversed mid-year once the child adapts.9
This is a school or board judgment call, not something a parent can request as a matter of right. MEXT's FY2023 nationwide survey found that of 57,718 foreign-national students needing Japanese-language instruction, about 3.6% (2,071 students) were placed below age-level, formally or temporarily, a minority outcome rather than a routine option (as of survey date 2023-05-01, published 2024-08).10
A lower-grade placement for language or academic catch-up is a documented, MEXT-recognized option, but schools and boards of education decide it case by case based on the child's demonstrated readiness. Approach it as a discussion with the school about the child's needs, not as a request the family is entitled to have granted.8
JSL Support Is Not Guaranteed Everywhere
Japanese-language instruction (nihongo shidō, 日本語指導), commonly shortened to JSL (Japanese as a Second Language) support, exists, but not for every student who needs it, and not to the same degree everywhere.10
Nationally, 90.4% of foreign-national students identified as needing Japanese-language instruction were receiving some form of accommodation-based instruction as of May 1, 2023. That means roughly 1 in 10 who needed it were receiving none (as of 2023-05-01, published 2024-08).10
Coverage drops sharply at the secondary level. The table below breaks this down by school type, from the same FY2023 MEXT survey cited above (as of 2023-05-01).10
| Metric | Figure | As of |
|---|---|---|
| Foreign-national students needing Japanese instruction (nationwide) | 57,718 | 2023-05-01 |
| Receiving some accommodation-based instruction (elementary) | 92.9% | 2023-05-01 |
| Receiving some accommodation-based instruction (junior high) | 90.8% | 2023-05-01 |
| Receiving some accommodation-based instruction (full-time high school) | 76.3% | 2023-05-01 |
| Receiving some accommodation-based instruction (combined-track schools) | 53.3% | 2023-05-01 |
| Supported students in the formal "Special Curriculum" track | 72.3% (up from 23.9% in FY2014) | 2023-05-01 |
| Municipalities with any foreign-national JSL-need student | 1,012 | 2023-05-01 |
| ...of which, fewer than 5 such students citywide | 394 (38.9%) | 2023-05-01 |
| ...of which, 200 or more such students citywide | 73 (7.2%) | 2023-05-01 |
| Students placed below age-grade due to JSL need | 2,071 (~3.6%) | 2023-05-01 |
Even where support exists, it is not always the formal kind. Only 72.3% of supported students were in the officially approved Special Curriculum track (特別の教育課程, tokubetsu no kyōiku katei) as of FY2023, up sharply from 23.9% in FY2014; the remainder rely on informal, ad hoc arrangements such as pull-out tutoring.10
The formal Special Curriculum framework only became legally available for full-time and part-time high schools, and the upper tracks of combined and special-needs schools, starting in fiscal year 2023. High-school-level JSL support is a genuinely new, still-maturing framework rather than an established one.10
Need is also geographically concentrated, which is part of why support is uneven. A dedicated program is easier to justify in Tokyo, Yokohama, Osaka, or Nagoya, where affected students concentrate, than in a municipality with only a handful.10
Schools that do not run the formal Special Curriculum most often cite a lack of a qualified teacher able to deliver integrated Japanese-and-subject instruction, reported by 1,968 elementary schools and 927 junior high schools nationally, followed by difficulty designing an individualized curriculum plan (as of 2023-05-01).10
Elementary and junior high schools report roughly 91-93% coverage, but full-time high schools report 76.3% and combined-track schools only 53.3%. Do not assume the level of support that worked at elementary school will carry through to high school.10
Timing the Move: The April and September Windows
Why April and September Are the Two Natural Entry Points
April aligns with the start of Japan's school year itself, and September aligns with the start of the second term, making it the next-cleanest entry point for a family that cannot arrive right at the year's start.11
This timing logic comes from relocation guidance written for Japanese families returning from living abroad (kikokushijo) rather than for foreign-national arrivals specifically. The underlying mechanic, term boundaries falling in April and September, is the same structural fact documented for the school calendar itself, but treat the specific advice below as illustrative practice rather than a foreign-resident-specific procedural requirement.
One relocation guide describes April and September as the two mainstream ("主流") admission points and recommends working backward from entrance-procedure timing, roughly two to three months before the target admission month (as of the guide's stated update date, 2024-08-01; confirm current guidance directly with the source, since this reflects one practitioner's advice rather than an official government deadline).11
The difference between arriving at these two windows versus elsewhere is structural, not incidental, as shown below.11
If arriving from abroad, count back two to three months from the April or September term start to begin entrance procedures. This timeline is drawn from returnee-focused relocation guidance rather than an official government deadline, so confirm specifics with your target school or ward office.11
Mid-Term Arrivals and the Social Cost
Classes taken up mid-term already have established peer groups and routines, which one educational-advisory foundation describes as harder for a transferring child to integrate into than a class at a term boundary, when composition is naturally more fluid (as of this guidance's current publication; no dated report is attached to this specific page).12
This guidance, like the timing advice above, is written primarily for kikokushijo returning to Japan rather than for foreign-national families specifically. The classroom dynamic it describes, established friendships by mid-term, is plausibly a structural feature of any Japanese classroom a transfer student joins, but no source reviewed here studied foreign-national mid-year arrivals on this specific point.12
Families in this situation describe the choice as shin-nyūgaku (新入学, entering fresh at a term boundary) versus hennyūgaku (編入学, transferring in mid-year).11
Good to know
Break dates are set locally, not nationally
The exact start and end dates of summer, winter, and spring break are set by each municipality's board of education, or, within the board's rules, by the individual school principal, not by national statute. The Yokohama and Shinjuku examples earlier in this article differ on both ends of summer break and on the winter-break end date (as of Yokohama's regulation, last amended 2023-03-24, and Shinjuku's calendar page, updated 2026-01-22; confirm current dates with each municipality's board of education).24
Even a single municipality's dates are not fixed indefinitely. Yokohama's own break calendar is scheduled to change starting fiscal year 2027 for heat-safety reasons, illustrating that these are administrative dates on a real update cycle rather than settled facts (as of 2026-04-15).5
The Japanese school year does not match most home-country calendars
Families relocating from a September-start system should expect a partial first term or a partial final term, depending on the arrival month, since Japan's own year runs April to March.1 Plan for this mismatch rather than a clean academic-year handoff.
Grade placement generally follows age, not language ability
The age-cohort rule covered in Japan's 6-3-3-4 School System also governs mid-year arrivals: schools place a child by age, not by Japanese ability or academic readiness, as the general rule.
The one documented exception is the temporary or formal below-age-grade placement covered earlier in this article. It is real, but it applies to a small minority, about 3.6% of foreign-national students needing Japanese instruction nationally in FY2023, and it is a school or board decision, not a parental entitlement (as of 2023-05-01).810