Is Preschool Mandatory in California? What the Law Says

California law by birth month, checked October 2026

When does school become required for your child?

Your child’s birth month

JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptember 1September 2–30OctoberNovemberDecember

Or try an example

Born Sept 2–30Born MarchBorn August

Example: born in March School is required from March. That’s the sixth birthday, during the kindergarten year.

Kindergarten is optional until the sixth birthday in March. Then the law requires school in some form. Kindergarten is one way to meet the rule.

A school year The sixth birthday School required by law

Kindergarten year September 1 to June 30First grade from September 1to age 18SepOctNovDecJanFebMarAprMayJunJulAugSepOctNot requiredSixth birthday School required

Each school year here runs from the September 1 age cutoff to June 30, its last day in state law. Your district sets its own first and last days of class.

Once enrolled, your child must attend from the first day.

An enrolled kindergartener must attend “on the same basis as children ages six through eighteen,” says the California Department of Education. That starts on the first day of kindergarten, not on the sixth birthday.

If you skip kindergarten, your child needs another legal arrangement from the sixth birthday.

From the sixth birthday, a child who isn’t exempt needs public school, public independent study, a private school or a credentialed tutor. A home-based private school counts as a private school when it meets the same rules and files the state’s private school affidavit, a yearly form.

If you choose public school, kindergarten is the grade open to them that year. A child can join it partway through the year (Education Code 48000). Public first grade opens to them the fall after the kindergarten year (Education Code 48010).

What counts as school at 6 → Which schools near us run TK? →

See the rules by birth month as a table

What California law requires, by birth month, for public school. Each school year runs from the September 1 age cutoff to June 30, its last day in state law.

Born	TK	Kindergarten	School required from	If you skip kindergarten
January	Optional, from the fall they turn 4	Optional until the 6th birthday in January, then school is required in some form	The 6th birthday, in January of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.
February	Optional, from the fall they turn 4	Optional until the 6th birthday in February, then school is required in some form	The 6th birthday, in February of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.
March	Optional, from the fall they turn 4	Optional until the 6th birthday in March, then school is required in some form	The 6th birthday, in March of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.
April	Optional, from the fall they turn 4	Optional until the 6th birthday in April, then school is required in some form	The 6th birthday, in April of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.
May	Optional, from the fall they turn 4	Optional until the 6th birthday in May, then school is required in some form	The 6th birthday, in May of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.
June	Optional, from the fall they turn 4	Optional until the 6th birthday in June, then school is required in some form	The 6th birthday, in June of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. If the birthday comes after the last day of class, no class days are left. Then public first grade, the fall after the kindergarten year.
July	Optional, from the fall they turn 4	Optional for the whole year	The 6th birthday, in July, after the kindergarten year ends	Public first grade, the fall after the kindergarten year (Education Code 48010 says “shall be admitted”)
August	Optional, from the fall they turn 4	Optional for the whole year	The 6th birthday, in August, after the kindergarten year ends	Public first grade, the fall after the kindergarten year (Education Code 48010 says “shall be admitted”)
September 1	Optional, from the fall they turn 4	Optional for the whole year	The 6th birthday, September 1, the first-grade cutoff	Public first grade, the fall after the kindergarten year (Education Code 48010 says “shall be admitted”)
September 2–30	Optional, from the fall after they turn 4	Optional at first, then school is required in some form	The 6th birthday, early in the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.
October	Optional, from the fall after they turn 4	Optional until the 6th birthday in October, then school is required in some form	The 6th birthday, in October of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.
November	Optional, from the fall after they turn 4	Optional until the 6th birthday in November, then school is required in some form	The 6th birthday, in November of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.
December	Optional, from the fall after they turn 4	Optional until the 6th birthday in December, then school is required in some form	The 6th birthday, in December of the kindergarten year	From the 6th birthday, a legal arrangement for the rest of that school year, unless exempt. Then public first grade, the fall after the kindergarten year.

What does California actually require, and from when?

The law requires education from the sixth birthday, and the duty falls on parents.

Education Code 48200 covers each person “between the ages of 6 and 18 years.” CDE reads that as starting on the birthday itself. Parents “must enroll their children in school once they reach the age of six.”

So the clock is the birthday, not the calendar. A child who turns 6 in January needs a legal arrangement in January. Waiting for the next September doesn’t meet the rule.

Before 6, the duties fall on schools. Each elementary or unified district must offer kindergarten to every child old enough for it. A district that runs kindergarten must also offer TK to eligible 4-year-olds, though charter schools don’t have to. A family can decline all of it. Enrolling changes that: once your child is in kindergarten, the attendance rules apply.

When the requirement does start, it’s the parent’s. A child who isn’t enrolled in public school and isn’t exempt “may be declared truant by the local school district,” says CDE. The penalty falls on the parent: one who doesn’t comply, and isn’t excused or exempt, commits an infraction (EC 48293).

As of October 2026, preschool is not mandatory in California. State law makes full-time education compulsory from a child’s sixth birthday (Education Code 48200). The California Department of Education says families must enroll a child in school once the child turns 6. It also says children are not required to attend kindergarten or transitional kindergarten (TK). Elementary and unified districts must offer kindergarten, and districts that run kindergarten must offer TK to eligible 4-year-olds. Families may decline both. One rule applies earlier: a child enrolled in kindergarten must attend like students aged 6 to 18. From the sixth birthday, a California child who isn’t exempt needs public school, public independent study, a private school or a credentialed tutor. A home-based private school counts as a private school when it meets the same rules, including filing the state’s private school affidavit.

Can we skip preschool and TK?

Yes, and skipping both changes nothing about when or how your child can start kindergarten.

CDE puts it plainly: “TK is not mandatory for children.” Families may “keep their children at home until the age of six, when compulsory education begins” (UPK FAQ).

Kindergarten doesn’t ask what came before. “Eligibility for kindergarten is on the basis of age only,” says CDE’s kindergarten FAQ. That means 5 by September 1 for the start of the year. Some schools test skills after a child starts, to plan teaching, not to decide who gets a seat. A child coming from home or a grandparent’s house starts on the same terms as one with two years of preschool.

TK has no tuition, which can make skipping it feel like leaving something on the table. The day can still cost money, because care before and after the TK day can be a separate bill. Our cost guide works through those numbers. If you’d like part-day state preschool alongside TK, CDE says a family can still use it, space permitting, as long as the hours don’t overlap.

Can we skip kindergarten, and which grade would our child start in?

Yes, kindergarten is optional. But for a child born September 2 through June, the sixth birthday arrives partway through that year, and from then on school is required in some form.

Preschool and TK usually end before 6; kindergarten is the year the sixth birthday can reach into. A child starts kindergarten the fall they are 5 by September 1 (EC 48000). The school year ends on June 30 (EC 37200). Put those together and birthdays split into two groups.

Born July 1 through September 1? The sixth birthday comes after the kindergarten year ends, so the whole year is yours to decide. Education Code 48010 says a child who is 6 by September 1 “shall be admitted” to first grade. That happens in the first month of the school year. CDE adds that there is “no requirement that a student first complete a year of TK or kindergarten before enrolling in first grade.” That rule covers public first grade; private schools set their own dates.

Born September 2 through June? The sixth birthday lands inside the kindergarten year. A child born in March turns 6 in March, and from that day the law requires school in some form. Kindergarten is one way to meet that rule, and the next section lists the others. A child born in early September turns 6 early in the kindergarten year, so almost none of it stays optional. Birthdays near the end of the year sit at the edge. If the birthday comes after your district’s last day of class, no class days are left that year. Public first grade opens that fall.

This is also where the grade stops being yours to pick. A child born after September 1 who hasn’t been in kindergarten isn’t eligible for public first grade that year (EC 48010). If they enroll in public school after turning 6, kindergarten is the grade open to them. A child can join it later in the year (EC 48000). Public first grade opens to them the next fall. Even for a child who is old enough, CDE calls kindergarten or first grade for a 6-year-old “a local decision, with parental input.”

Most families enroll anyway. CalMatters reported in January 2026 that “about 5% a year opt out.” Some of those families think their child isn’t ready. Others are happy with the preschool, day care or family care they already have. CalMatters added that Latino families are the least likely to send their children to kindergarten. Patricia Lozano of Early Edge California, which advocates for early education, pointed to a language barrier, fear of registering over immigration concerns, and district notices missed while parents work long hours.

So if the birthday lands mid-year and you aren’t enrolling, something else has to count as school.

What counts as legal schooling once our child turns 6?

From the sixth birthday, a child who isn’t exempt needs one of the arrangements below, and “we just keep them home” stops counting that day.

Before that birthday, nothing was required unless you chose to enroll. So it can feel odd that a child happily at home at 5 needs something new at 6. Several of these still happen at home. What changes is that one of them has to be in place. The Education Code sets them out, and CDE’s homeschooling page covers the ones that happen at home.

Source: California Education Code and California Department of Education.

The affidavit is the step most families haven’t heard of. The Education Code sets a filing window of October 1 to 15. But CDE keeps the filing system open “throughout the school year beginning August 1 and ending June 30, to accommodate new schools and home schools.” That matters for a child who turns 6 in March. Filing doesn’t close the door on public school, either: “You may enroll your child in public school at any time,” says CDE.

Would skipping hurt our child?

It depends on what your child would do instead, and the evidence on skipping kindergarten itself is thin.

Once the legal route is settled, the worry most parents are left with is whether skipping costs their child something. Preschool research looks contradictory until you ask what each study compared preschool to.

Perry Preschool ran from 1962 to 1967 for a small group of low-income children. It had five or six children per certified teacher and a weekly home visit. Its comparison group got no preschool at all. A 2010 analysis using follow-up to age 40 put the yearly return to society at 7–10%.

Tennessee’s statewide pre-K trial also served low-income children, decades later. Researchers interviewed parents of 306 children in the study who didn’t attend. Of those, 63% were in home-based care, 13% in Head Start and 16% in private centers. Early gains faded by the end of kindergarten. By sixth grade, several results favored the children who hadn’t attended.

The question isn’t preschool versus nothing. It’s this program versus whatever your child’s day would otherwise be. California’s own PPIC/PACE study, from October 2023, looked at the smaller TK program that ran before the statewide expansion. TK did not appear to raise third- and fourth-grade test scores more than the other options children had. Those ranged from state preschool and Head Start to care at home. It did find special-education needs spotted about half a grade sooner. That’s a finding about timing; the study didn’t show better results later because of it. Our pillar guide covers what the research says about TK and preschool in more depth.

So compare two actual days. Who would be with your child, and how much talk, play and time with other children would that day hold? Then look at what the program would add. How many children are there per adult, which adults stay with the class, and what help is there for a language or learning need? A steady, caring arrangement at home isn’t automatically worse than a classroom. A program earns its place by what it adds that would be hard to copy at home.

Kindergarten itself has far less research. A study of 166 children born on either side of a school-entry cutoff measured growth from fall to spring. Kindergarten helped reading growth and self-control, measured with a “do the opposite” game, but not math growth, and first grade showed no comparable effect. Its families were affluent and highly educated, so it says little about other settings. An older study of states that first funded kindergarten in the 1960s and 70s found lower dropout later among white children. It found no comparable effect for Black children. It measured whether kindergarten was available, not a family’s choice to skip it.

We looked for a study that follows children kept out of every classroom until 6 and then sent to first grade, and found none. SchoolScope can’t fill that gap. Our Scope Scores start with third-grade tests, and we have no student-level records. So we can’t show whether children who skipped TK or kindergarten at a given school did differently later.

What still applies when we enroll?

The usual enrollment steps apply, whatever your child did before.

Expect to show proof of your child’s age, proof of where you live and immunization records. Each district sets its exact list, so check its enrollment page.

Coming from home doesn’t change the shots a school requires at entry. Ask the school which records and exemptions apply to your child. Two routes sit outside the school-entry vaccine rules. One is a home-based private school. The other is independent study with no classroom instruction (Health and Safety Code 120335(f)).

Public schools need proof of a dental check by May 31 of your child’s year in TK or kindergarten, or of first grade if your child wasn’t in public TK or kindergarten (EC 49452.8). A check from the 12 months before enrollment counts, and a child checked in TK doesn’t repeat it. The school has the form, and any waiver.

Because kindergarten admits by age, some children arrive with two years of preschool and some with none. A better question for the school is how the class supports children who start with different skills.

Skipping preschool also doesn’t move the calendar. Magnet programs, lotteries and requests for a school other than your assigned one run on their own deadlines. Some close the fall before. Our age-cutoff guide covers when to sign up.

Is California about to require kindergarten?

Families also hear that kindergarten may soon become required. No law requires it today. The recent bills would have required a kindergarten year before public first grade, not school at 5. SB 70 passed the Legislature, and Governor Newsom vetoed it on September 25, 2022. His veto message put the cost at “up to $268 million ongoing” in Prop. 98 school funding. It described the bill as expanding compulsory education to kindergarten. The bill would have done that by requiring a completed kindergarten year before a child could enter public first grade. A child already in kindergarten whom the district judged ready could still move up early (bill text).

AB 1631 used the same approach, phased in from the 2028–29 school year. Assemblymember Al Muratsuchi introduced it in January 2026. Assemblymember Darshana Patel was added as a lead author in March, and Sen. Susan Rubio is its principal coauthor. It passed the Assembly Education Committee 6–2 in March. The Appropriations Committee held it on May 14, 2026. The bill record showed no later action as of our October 12, 2026 check.

Under these bills, a completed kindergarten year becomes the condition for public first grade. Their text doesn’t say that year has to be in a public school. Rubio told CalMatters that Latino families, who in her experience deeply respect the public schools, hear the state call kindergarten optional and “listen to that.” Jamie Heston of the Homeschool Association of California told the same reporter: “Most kids are already going to kindergarten. But some parents have good reasons for keeping their kids at home.”