Washington school age calculator
Washington State requires children to turn 5 on or before August 31 to start kindergarten that fall. This is one day earlier than the September 1 cutoff used by most states.
Select your country and region, then choose the child's date of birth to see their grade and school timeline.
Washington State kindergarten rules
Under RCW 28A.225.160, Washington State sets August 31 as the kindergarten cutoff date — one day earlier than the September 1 cutoff used by most US states. A child born September 1 or later must wait until the following fall. Washington offers Early Childhood Education and Assistance Program (ECEAP) pre-K for income-eligible 3- and 4-year-olds, and the state has expanded access to full-day kindergarten across all districts.
FAQ
What is Washington State's kindergarten cutoff?
August 31. Children must turn 5 on or before August 31 to enroll in kindergarten that fall. A September 1 birthday means waiting until the following year.
Is kindergarten mandatory in Washington State?
Yes. Washington requires school enrollment starting at age 6. Because kindergarten is the standard entry point at 5, most families enroll at 5.