School grade chart | Birth date to grade and school years in Japan
Pick a birth date and school year to estimate grade level and typical entrance and graduation years under Japan’s common April-start school-year rules. It is useful for school paperwork and quick checks, while intentionally excluding regional differences, repeat years, gap years, and non-Japanese systems or other exceptional paths.
What you can do with School Grade Chart
Pick a birth date and school year to estimate grade level and typical entrance and graduation years under Japan’s common April-start school-year rules. It is useful for school paperwork and quick checks, while intentionally excluding regional differences, repeat years, gap years, and non-Japanese systems or other exceptional paths.
How to use
Change the school year to refresh the birth-date ranges and milestone years for every row. Even without entering a birth date, you can use the full table to see how birthdays map to grades in that year.
How to read the results
How grades are determined
This chart follows the common Japanese rule that one grade usually includes birthdays from April 2 of one year through April 1 of the next year. Birthdays from January 1 through April 1 are often called “early birth” in Japan, and those students can be younger than classmates born on or after April 2 of the previous year.
How to read the school years
Choose a birth date and target Japanese school year to estimate the student’s grade and typical entrance and graduation years from elementary school through a standard university track. The years shown are Japanese school fiscal years, so school year 2026 runs roughly from April 2026 to March 2027. Results are approximate and ignore repeat years, gap years, and other exceptions.
Ways to use it
Check approximate entrance and graduation school years
Use the chart to estimate current grade, entrance year, and graduation year from a birth date before school paperwork.
Compare grade boundaries around April 1 and April 2 birthdays
Review how Japan's April-start school-year rules affect grade placement, including early-birthday cases.
Review grade mapping across siblings or different school years
Switch the target school year and compare grade mappings for siblings or multiple years in one view.
How input data is handled
- The selected birth date and school year are processed in your browser and are not uploaded to a server.
- When you share the URL, the current `birth` and `year` query parameters are included. Clear them before sharing if you do not want to expose personal information.
FAQ
- How are grade boundaries defined?
- This tool follows the common rule that one grade covers April 2 through the following April 1.
- What counts as an “early birth” date?
- Birthdays from January 1 through April 1 are often described as early birth in Japan.
- Which grade is April 1?
- April 1 birthdays are grouped with classmates born on or after April 2 of the previous year.
- Which grade is April 2?
- April 2 is treated as the earliest birthday within the new grade cohort for that school year.
- Does this include university years?
- Yes, as a simplified four-year university track. It does not model repeat years or gap years.
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