For teachers: soroban grading systems compared (Japanese kyu/dan vs UCMAS-style levels)
For teachers whose students bring two different level systems to class.
Japanese kyu/dan grades belong to exam bodies; franchise programs and most apps use their own ladders, and the names do not map one to one. The only reliable comparison is by problem format: digits and number of terms in addition, digits × digits in multiplication, digits ÷ digits in division. A school that hands families one table, "our level = this exam grade = this format = this app level", stops the "level 5 at home, 7th kyu at school" confusion.
The systems
| System | Grades | Who awards | Notes |
|---|---|---|---|
| Nissho (Japan Chamber of Commerce and Industry) | 6th–1st kyu (7th–10th kyu and dan grades via the Japan Abacus Federation, Nichishuren) | Exam body | The best-known Japanese certificate; 1st–6th kyu: 20 multiplication, 20 division, 10 addition problems in 30 minutes |
| Zenshuren (National Abacus Education Federation) | 15th kyu → 1st kyu, pre-1st dan → 10th dan (37 steps) | Exam body | Small steps; lower kyu examined monthly; 6th kyu and above endorsed by Japan's education ministry |
| Zenshugakuren (National Abacus School Federation) | 10th–1st kyu, 1st–10th dan | Exam body | Also runs mental-arithmetic exams |
| UCMAS | 10 levels for 5–7-year-old starters, 8 for 8–13-year-old starters, over 3–4 years | Franchise | Ages 5–13; own graduation exam; no link to Japanese grades |
| ALOHA and similar | Own ladders by age group (Tiny Tots 5–7, Kids 8–13) | Franchise | Same situation as UCMAS |
| Apps | Own levels | Vendor | Usually not tied to any exam; a few can switch tables |
Why names do not map
"3rd kyu" in two Japanese bodies is not the same problem set: digits, terms and time limits differ. A franchise "Level 4" has no defined relation to any kyu. Even mental-arithmetic (anzan) grades are separate from soroban grades in Japan: a child at 5th kyu on the soroban may be at 8th kyu in anzan.
Compare by format, not name
Build one table for your school. Example rows (formats are illustrative; copy them from the exam samples of the body you follow):
| School level | Exam grade | Addition (mitori) | Multiplication | Division | Home app level |
|---|---|---|---|---|---|
| Beginner | 15th–11th kyu | 1–2 digits, 5 terms | — | — | Beginner steps |
| 9th kyu | 9th kyu | 2 digits, 8 terms | 2 × 1 digits | — | 9th kyu |
| 7th kyu | 7th kyu | 2 digits, 10 terms | 2 × 2 | 3 ÷ 1 | 7th kyu |
| 6th kyu | 6th kyu | 3 digits, 10 terms | 3 × 2 | 4 ÷ 1 | 6th kyu |
| 3rd kyu | 3rd kyu | 5 digits, 10 terms | 4 × 3 | 6 ÷ 3 | 3rd kyu |
| 1st kyu | 1st kyu | 6 digits, 10 terms | 5 × 4 | 8 ÷ 4 | 1st kyu |
Three steps: pick the one exam body your school follows; write its format per grade; then align every home material (workbooks, app) to that table, or, if the app cannot be aligned, publish the correspondence to families.
Choosing home tools that fit
Workbooks: use ones written to the same body's samples. Apps: prefer ones whose level table the school can switch to its exam format. Soroban Kingdom, for example, lets the teacher screen choose between its standard ladder, a from-10th-kyu ladder, Nissho/Nichishuren-style, Zenshuren-style, Zenshugakuren anzan-style and a UCMAS-style ladder. If an app only has its own levels, give families the table above with the app's level in the last column. Before an exam, run at least one session under the exam's time limit rather than the app's.
One condition of good soroban learning is that the level system leads to a real exam. Two ladders in a child's head is the most common way that condition fails.
Frequently asked questions
Our school sits exams from two bodies. Which table?
Build the table from the main one and add a column with the closest grade of the second by format. Show children one school level only; name the exam body when they sit it.
We are a UCMAS/ALOHA franchise. Can students take Japanese exams?
The ladders are independent. Place the student in the Japanese ladder by format (digits and terms), not by level name, and expect some gaps to fill, especially in division formats and time limits.
Will changing the level table confuse children?
Once is fine. Do it straight after an exam or at a promotion, and give families one sheet: "Home level 7 becomes school 8th kyu."
You learn far faster by moving the beads than by reading. In Soroban Kingdom, levels 20–16 are free forever with no sign-up, on any phone or computer.
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