AZ School EnrollmentAZ School Enrollment

When can my child start kindergarten in Arizona?

Your child can start kindergarten in an Arizona public school if they turn five before September 1 of that school year. That rule is state law (A.R.S. 15-821), so it is the same in every district and charter school. A child who misses the cutoff can sometimes be admitted early, but that decision belongs to the district.

The cutoff

The statute says a child "is deemed five years of age if the child reaches the age of five before September 1 of the current school year." A birthday on September 1 itself misses the cutoff; a birthday on August 31 makes it. First grade works the same way with six as the age.

If you are coming from a state with a later cutoff (several use dates in the autumn or winter), check your child's birthday against September 1 before assuming they will go into the same grade as at home. A child who was in kindergarten elsewhere with a September or October birthday may be placed in kindergarten again here, or the district may admit them to first grade under the early-entry rule below. Ask the school how it handles this; the records from the old school help.

Early entry

A district governing board "may admit" a child who has not reached the required age if it finds that admission is in the child's best interest, as long as the child turns five by January 1 of the school year (or six, for first grade). For first grade the law requires the decision to follow consultation with the parents, the child, the teacher and the principal.

In practice this means:

  • Early entry is discretionary. Some districts have a written process with a screening; some rarely grant it. Charter schools set their own policies.
  • The latest possible birthday is December 31. A child born in January cannot be admitted early under the statute.
  • Ask the district office, not just the school, and ask what the screening involves and when it is offered. Many districts run early-entry screening in spring and summer, before the year starts.

Kindergarten is not compulsory

Arizona's compulsory attendance law (A.R.S. 15-802) covers children aged six through sixteen. A five-year-old does not have to be in school. Once a child is six, the law expects them to be in a public, charter or private school, homeschooled, or on an ESA contract. One wrinkle for homeschooling families: if you plan to homeschool but do not want to begin instruction until the child is eight, the statute still requires you to file an affidavit of intent with the county school superintendent saying so.

Half-day and full-day

As of October 2026, the state funds kindergarten at a half-day rate. A district or charter that offers a full day pays for the second half from other money or from parent tuition, and must still let you choose a half day. What that means for your family:

  • Ask whether the school's full-day program is free, and if not, what the second half costs and whether fee waivers exist.
  • Ask whether a half-day option is actually offered at your school or only elsewhere in the district.
  • Whether any recent legislation changed the half-day funding rule could not be confirmed for this page. The district's kindergarten page or the Arizona Department of Education is where to check.

Preschool and developmental options

Public school preschool in Arizona is limited and varies by district. Many districts run tuition-based preschool, Head Start partnerships, or preschool special education classes. If you have concerns about your child's development, ask the district about a preschool evaluation; districts evaluate young children for developmental delays and provide services before kindergarten when a child qualifies. The IEP and 504 page explains how an existing plan moves with you.

Child-care and preschool immunization rules differ from school rules. For children aged 18 to 59 months, ADHS requires hepatitis B, DTaP, Hib, polio, MMR and varicella, and in Maricopa County two doses of hepatitis A for children aged one to five; missing doses must be received within 15 days of enrollment. Hepatitis A is not required for K-12.

When to register

Districts usually open kindergarten registration for the coming year in the winter or spring, often with a kindergarten roundup or open house. Registering early matters most if you want a particular school through open enrollment, because seats go in priority order and a wait list follows. If you arrive in summer or after the year starts, your resident district school must enroll your child at any time; a charter or out-of-boundary school takes you as capacity allows.

What to bring

  1. Proof of age. A certified birth certificate is the standard. If you do not have one, A.R.S. 15-828 accepts other reliable proof with an affidavit explaining why; see enrollment documents. You have 30 days after enrollment to produce it.
  2. Proof of residency. One document in a parent's name, or a notarized affidavit from the Arizona resident you are staying with. See proof of residency.
  3. Immunization record showing the month, day and year of each dose. For kindergarten entry in 2026-27, ADHS requires hepatitis B (3 doses), polio (4 doses, or 3 if the third was given at age four or later and at least six months after the second), MMR (2), varicella (1) and DTaP (5, or 4 if the fourth dose came after age four). A child with at least one dose of each required vaccine and a written catch-up schedule may attend. Exemption forms must be the current ADHS versions. Full details on immunization requirements.
  4. Your photo ID, and custody or guardianship papers if the child is not living with a parent (see relatives and guardians).
  5. Preschool records, if any, including any IEP or evaluation.

If you lack a fixed address, the school must enroll your child immediately without these documents and help you gather them; see We do not have a permanent address yet.

Sources and where to verify

Frequently asked questions

What is the kindergarten cutoff date in Arizona?

A child must turn five before September 1 of the school year (A.R.S. 15-821). The same statute sets first grade at six before September 1.

My child turns five in October. Is there any way to start this year?

Only through early entry. A district board may admit a child who turns five by January 1 if it finds that is in the child's best interest, usually after a screening. Ask the district office whether it offers this; the answer differs by district and charter.

Do I have to send my five-year-old to kindergarten?

No. Compulsory attendance begins at six. Most families do start at five, and kindergarten is where the school gets to know your child before the third-grade reading requirement arrives.

Is full-day kindergarten free in Arizona?

Not always. The state funds a half day, so a district may charge tuition for the second half or cover it from other funds. Ask the school directly; practice varies, and some districts offer full-day at no charge.

What shots does my child need for kindergarten?

For 2026-27: hepatitis B, polio, MMR, varicella and DTaP, with dose counts set by ADHS. A child with at least one dose of each and a written catch-up schedule may attend while finishing the series. Only current ADHS exemption forms are accepted.

Can my child start kindergarten before the birth certificate arrives?

Yes. Proof of age is due within 30 days after enrollment under A.R.S. 15-828, and the statute accepts other reliable proof with an affidavit if you cannot get a certified copy. The immunization record is the item that cannot wait.

My child did kindergarten in another state with a later cutoff. Where will they be placed?

Ask the school. With a birthday after September 1 the child does not meet Arizona's first-grade age rule, so placement in first grade would use the early-entry process, with the old school's records as evidence. Districts handle this case by case.

Last reviewed October 11, 2026. Figures change; the sources above are where to check.