A transitional kindergarten (TK) teacher leads a public school classroom for four-year-olds in California.
Since the 2025-26 school year, state law has required school districts to admit every child who turns four by September 1, completing universal TK.
TK teachers are credentialed school employees — a different employer, credential and pay system from center-based pre-K and childcare teaching.
What is a transitional kindergarten (TK) teacher?
A TK teacher runs a transitional kindergarten classroom: a public school room of children in the year before kindergarten, all of them four years old at the start of the year.
The program is California's, and it is written into Education Code §48000 — from the 2025-26 school year onward, school districts must admit every child who turns four by September 1 to a transitional kindergarten program.
That provision completed the state's universal TK phase-in.
Universal status is recent.
The statute phased TK in by birthday window: in 2022-23 the window ran from September 2 to February 2; in 2023-24 it ran through April 2; in 2024-25 through June 2; and from 2025-26 onward it covers every child turning four by September 1.
Each step widened who qualifies for a TK seat.
The statute also sets the shape of the room.
From 2025-26, TK classrooms must maintain an average of at least one adult for every 10 pupils — a step down from the 1:12 average required from 2022-23 — and average TK class enrollment at each school site may be no more than 24 pupils.
Those are statutory averages, and they are the numbers districts staff TK rooms to meet.
One more structural fact defines the job: the employer is a school district.
TK teachers are public school employees hired by districts rather than by licensed child care centers, which is why the credential question below looks different from the licensing rules that govern center classrooms.
How is TK different from pre-K and kindergarten?
Pre-K is the broader category — an umbrella over publicly funded and private classrooms for children too young for kindergarten.
NIEER's 2025 State of Preschool Yearbook counts 63 state-funded preschool programs across 44 states and DC for the 2024-25 school year, enrolling nearly 1.8 million children: 37% of four-year-olds and 9% of three-year-olds nationally.
TK is one state's statutory version of that year — California's, for four-year-olds, run by school districts.
The teacher rules differ more than the children do.
Whether a state-funded pre-K lead teacher needs a degree depends on the program: in 2024-25, only 30 of the 63 state-funded programs met NIEER's benchmark requiring a bachelor's degree for lead teachers in every classroom, and 21 met the benchmark requiring assistant teachers to hold a CDA or equivalent.
TK, by contrast, requires credentialed teachers by statute.
Our pre-K teacher requirements guide samples several state programs, California TK among them.
Program standards come from different places too.
NIEER's quality benchmarks for state pre-K include a staff-to-child ratio of 1:10 or better and class sizes of 20 or lower — 51 of the 63 programs met the ratio benchmark in 2024-25 and 50 met the class-size benchmark.
Those are NIEER's research benchmarks, not law.
California's TK staffing averages come from Education Code §48000 itself and bind the districts.
Licensed child care centers sit under a third system entirely: staff qualifications there come from the state child care licensing agency, the rules our daycare teacher requirements guide collects by state.
Kindergarten is the year after.
It is a graded public school year, and BLS notes that all states require public school teachers to be licensed or certified in the grade level they teach, with kindergarten teachers usually needing at least a bachelor's degree.
TK sits one year earlier — its classrooms take the children who turn four by September 1.
What credential do TK teachers need?
The statute's rule has two parts.
First, TK teachers must be credentialed.
Second, teachers first assigned to a transitional kindergarten classroom after July 1, 2015 needed, by August 1, 2025, at least one of the following: 24 units in early childhood education or child development, or both; comparable experience documented by the district; or a Child Development Teacher Permit or Early Childhood Education Specialist credential from the California Commission on Teacher Credentialing (CTC).
Read the two parts together.
The 24 units are one option among three, not the rule itself — a teaching credential is still the floor.
The statute also does not name a specific teaching credential for TK: summaries that restate the rule as "Multiple Subject credential plus 24 ECE units" add a credential name the Education Code does not contain.
Which credentials qualify a teacher for a TK assignment is the CTC's question to answer, and the experience option is the district's to document.
Confirm the TK credential rule before you build an application
Can childcare teachers move into TK jobs?
Yes — but the teaching credential, not the center experience, decides it.
Center teachers qualify under their state's child care licensing rules, while the TK statute requires credentialed teachers, so the move runs through a credential first.
The statute's three options then sit on top of it: 24 units of ECE or child development coursework, experience the district documents as comparable, or a CTC Child Development Teacher Permit or ECE Specialist credential.
The experience option is the one center teachers should notice, because the statute lets a district document comparable experience in place of the 24 units.
If your hours leading groups of four-year-olds can be documented that way, the classroom experience you already have is the part the law names.
The credential routes themselves — which program leads to which document — were not part of the research for this page; the CTC and the hiring district own that list.
Two practical differences shape the decision.
The calendar: BLS notes that preschool teachers in public schools generally work school hours, often on a 10-month year, while those in daycare settings may work year-round with longer hours.
And the wider public-school pattern: BLS says public-school preschool teachers generally need at least a bachelor's degree and must be licensed to teach early childhood education, which covers preschool through third grade — context for how district early-childhood rooms are staffed, though TK's specific rule is the statute above.
For center operators, the same statute reads the other way: with districts required to admit every four-year-old, district TK rooms joined the employers hiring teachers of four-year-olds alongside center pre-K.
The pay split in the next section is part of what candidates can see when they compare.
How much do TK teachers make?
Our research found no TK-specific line in federal wage statistics, which follow standard occupation codes rather than job titles.
The two nearest published series are preschool teachers (SOC 25-2011), with a May 2025 median of $38,140 per year or $18.34 per hour, and kindergarten teachers, except special education (SOC 25-2012), with a May 2025 median of $62,680.
Neither number is a TK pay scale — they are the two occupations TK sits between.
Within the preschool-teacher series, the May 2025 median ran $52,800 in educational services — state, local and private — against $36,850 in child daycare services.
TK teachers work for districts, on the educational-services side of that split, but what an individual posting pays is the district's to set: read the medians as the industry split, not as TK pay.
Our TK teacher salary page shows the May 2025 kindergarten-teacher (SOC 25-2012) figure, labelled as a related benchmark rather than TK pay.
Find TK and pre-K teacher jobs
TK jobs are California district jobs, so the hiring list starts with school district postings — universal TK has made the four-year-old year a district staffing assignment statewide since 2025-26.
Beyond TK, the same classroom skills fit center pre-K rooms and the state-funded preschool programs NIEER counts in 44 states and DC.
Our TK teacher jobs page collects current openings in one place, and the board's pre-K teacher jobs list the center-side roles if you are weighing both settings.
When you apply, lead with what a TK room asks for: a credential, or a documented route to one; hours leading groups of four-year-olds; and the curriculum and family-communication experience you can speak to in a district interview.
If you are coming from a center, put your licensing training history next to your unit count so the district can place you against the three options in the statute.
Career information, not licensing or legal advice. California's TK rules are set in Education Code §48000 and administered by the school districts, with credentials issued by the California Commission on Teacher Credentialing — confirm current requirements with the CTC and the hiring district before you act on them.