State guide · South Dakota · 2026–27
What grade is my kid in South Dakota?
Children must turn 5 on or before September 1.
Calculate for your child
The South Dakota rule in detail
| Kindergarten cutoff | Turn 5 by September 1 |
|---|---|
| Who sets it | Set statewide |
| Legal basis | S.D. Codified Laws § 13-28-2 |
| School required from | Age 5 to age 18 |
| Kindergarten mandatory? | Yes — attendance is required |
How South Dakota compares
20 states use the same September 1 cutoff: Alabama, Alaska, California, Connecticut, Florida, Georgia, Idaho, Illinois, Maryland, Michigan, Minnesota, Mississippi, New Mexico, Oklahoma, Oregon, Rhode Island, South Carolina, Texas, Utah and Wisconsin. 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.
11 states and DC require school attendance to begin at age 5, South Dakota among them. That is as early as anywhere in the country requires it.
South Dakota is one of 17 states and DC that require kindergarten attendance outright; in most of the country it is optional.
School districts in South Dakota
See the 147 school districts in South Dakota, county by county, with enrollment and each district's website.
Starting early in South Dakota
A child transferring from another state may continue their program without interruption.
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.