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PreschoolWise

Clear, independent answers to the questions parents actually ask about preschool and transitional kindergarten — grounded in your state's real rules.

Transitional KindergartenKindergarten ageWhat is pre-K?Preschool ageRedshirting kindergartenPreschool vs Pre‑KTK vs Preschool vs KCostFree preschoolHead StartEligibility checkerBrowse states

© 2026 PreschoolWise. Educational guidance, not legal or enrollment advice — always confirm with your school district.

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When can your child start?

Enter your child's birthday and state to see when they can start kindergarten, whether Transitional Kindergarten fits, and which preschool and free pre-K options match their age.

Helpful guides for parents

What age does preschool start?Typical ages, readiness signs, and state cutoffs.Is my child ready for preschool?The readiness signs to look for.Preschool vs. daycareHow they differ and which fits your child.Preschool vs. pre-KWhat comes when, from ages 3 to 5.

Estimates based on each state's published kindergarten entrance cutoff. Districts can set their own rules — always confirm with your local school district. Not legal or enrollment advice.

California families: TK is now open to every 4-year-old — see our California TK eligibility chart by date of birth.