Oregon Kindergarten Age Cutoff — Plus Preschool & TK (2026–2027)
In Oregon, a child must turn 5 by September 1 to start kindergarten that fall. Oregon does not have a statewide Transitional Kindergarten grade; children go from preschool/pre-K to kindergarten. Oregon's public pre-K program, Oregon Prekindergarten (OPK) / Preschool Promise, is available to eligible families (ages 3–4; income-based (OPK ≈ Head Start limits; Preschool Promise ≤200% FPL); not statewide-universal).
| Kindergarten cutoff | Turn 5 by September 1 |
|---|---|
| Transitional Kindergarten | Not offered statewide |
| Public pre-K | Oregon Prekindergarten (OPK) / Preschool Promise — eligibility-based |
| Compulsory school age | 6 |
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Oregon age cutoffs — the details
Kindergarten and TK cutoffs are set by state law; preschool has no legal age cutoff because it is private. Cutoff verified from the official Oregon source. Always confirm the current date with your school or district — rules can change year to year.