State guide · Idaho · 2026–27
What grade is my kid in Idaho?
Children must turn 5 on or before September 1.
Calculate for your child
The Idaho rule in detail
| Kindergarten cutoff | Turn 5 by September 1 |
|---|---|
| Who sets it | Set statewide |
| Legal basis | Idaho Code § 33-201 |
| School required from | Age 7 to age 16 |
| Kindergarten mandatory? | No — kindergarten is optional |
How Idaho compares
20 states use the same September 1 cutoff. 16 have an earlier cutoff and 8 have a later one, so a child born the same day can land a full grade apart depending on where they live.
10 states require school attendance to begin at age 7, Idaho among them. 39 states and DC start compulsory schooling earlier.
Like most of the country, Idaho does not mandate kindergarten — only 17 states and DC do.
Starting early in Idaho
Idaho law does not identify a general early-entrance waiver.
Early entrance is decided locally even where state law allows it, so ask your district office what evidence they expect and when the window closes.
Frequently asked
What's the Idaho kindergarten cutoff?
Children must turn 5 on or before September 1.
Who sets the kindergarten cutoff in Idaho?
Idaho sets one entrance date statewide, so it's the same in every district. The rule lives in Idaho Code § 33-201.
Can a child start kindergarten early in Idaho?
Idaho law does not identify a general early-entrance waiver.
At what age is school required in Idaho?
In Idaho, school attendance is compulsory from age 7 to age 16. Idaho does not require kindergarten attendance; compulsory schooling starts at age 7.
Grade by age in Idaho — 2026–27
| Age | Typical grade | Notes |
|---|---|---|
| 4 | Not in school yet | Starts K in fall of the following school year. |
| 5 | Kindergarten | |
| 6 | 1st grade | |
| 7 | 2nd grade | |
| 8 | 3rd grade | |
| 9 | 4th grade | |
| 10 | 5th grade | |
| 11 | 6th grade | |
| 12 | 7th grade | |
| 13 | 8th grade | |
| 14 | 9th grade | |
| 15 | 10th grade | |
| 16 | 11th grade | |
| 17 | 12th grade |
Source
Legal basis: Idaho Code § 33-201. Cutoff, early-entrance and compulsory-age details cross-checked against the Education Commission of the States 50-State Comparisons (K-3 policies and compulsory school age).
Idaho State Dept. of Education — verify cutoff with your local school district before relying on this page for enrollment.
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