Washington school age calculator

Washington State's August 31 cutoff: one day earlier than most

Washington State's kindergarten cutoff is August 31 — set by RCW 28A.225.160. This is one day earlier than the September 1 cutoff used by most US states, but the practical difference is significant: a child born September 1 does not qualify in Washington and must wait a full year. Washington requires school enrollment starting at age 8 for homeschooled families, but public school compulsory attendance starts at age 6. In practice, most families enroll at 5. All Washington public school districts offer full-day kindergarten, funded at the state level since the 2016–17 school year.

ECEAP: Washington's state-funded pre-K for income-eligible families

Washington's Early Childhood Education and Assistance Program (ECEAP) provides free preschool for income-eligible 3- and 4-year-olds (families at or below 110% of the federal poverty level, with some slots for families up to 200%). ECEAP is administered by the Department of Children, Youth, and Families (DCYF) and delivered through licensed providers — public schools, nonprofits, and community agencies. ECEAP operates both part-day and full-day options. To apply, contact your local school district or search the DCYF provider directory. Priority goes to the lowest-income families and families experiencing homelessness.

Head Start, tribal compact schools, and Seattle Public Schools

Washington has a significant Head Start network serving low-income families and tribal communities. Tribal Compact Schools — operated by federally recognized tribes under agreements with the state — may have different enrollment policies and sometimes different cutoff dates for tribal member children. Seattle Public Schools uses August 31 and opens kindergarten enrollment in February. Required documents: birth certificate, proof of Seattle address (for out-of-zone requests, address proof is especially important), immunization records (Washington requires DTP, polio, MMR, Hep B, and varicella), and a completed health history form.

Washington enrollment windows and required documents

Most Washington school districts open kindergarten enrollment in January–March for the following fall. Tacoma Public Schools typically opens in January; Spokane Public Schools in February. Required documents across most WA districts: certified birth certificate, proof of Washington residency (utility bill or lease), current immunization records meeting Washington's school immunization requirements (or a signed exemption form for medical or personal/philosophical reasons — Washington allows non-medical exemptions), and a health and development history form. Some districts also require a vision screening.

If your child misses Washington's August 31 cutoff

Children born September 1 or later must wait until the following fall. During the gap year, ECEAP (if income-eligible), Head Start, licensed preschools, and community childcare programs are the main options. Washington does not have a TK program. Some Washington families choose private kindergarten for the gap year, then request Grade 1 placement — but public schools will assess readiness. Families with September birthdays face the maximum relative age disadvantage in Washington's system; research shows these children are statistically more likely to be diagnosed with ADHD and less likely to be identified as academically gifted — exactly because they are the youngest in the class. In ambiguous cases, waiting is often the better academic choice.

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