California has entered the second year of full implementation of Universal Transitional Kindergarten, a program that guarantees free pre-K to every four-year-old in the state. Governor Gavin Newsom marked the milestone on August 19, 2026, and his office said the program saves families nearly $14,000 per child on average in child care costs. According to the governor's office, the state has invested $12.5 billion since 2019 to expand TK to all four-year-olds.
Enrollment in TK reached 213,313 students in the 2025-26 school year, according to California Department of Education census day data. That is up from 177,570 in 2024-25 and 151,491 in 2023-24, representing a 20 percent increase and a 17 percent increase in consecutive years.
How Universal TK Developed
California first created Transitional Kindergarten in 2012 as a voluntary grade for a narrow age band of children born between September and December who were no longer eligible for kindergarten after the state moved the cutoff date. That program served roughly 100,000 children annually until 2021, when Assembly Bill 130 began expanding eligibility incrementally. The Public Policy Institute of California reported that the phased rollout from 2022-23 to 2025-26 gradually lowered the eligibility cutoff, ultimately covering all four-year-olds by the 2025-26 school year. The universal expansion more than doubled the prior enrollment.
Take-Up Rate Declines
While total enrollment has grown, the share of eligible children actually enrolled has fallen. According to the California Budget & Policy Center, the take-up rate dropped from 62 percent in 2021-22, before eligibility expanded, to 52 percent by the 2025-26 school year at full expansion. That means nearly half of four-year-olds eligible for free pre-K are not participating.
A June 2025 report from the Public Policy Institute of California found that in 2023-24, 91 percent of elementary and unified districts and 85 percent of schools offered TK, with 84 percent increasing full-day options. Districts reported moving toward developmentally appropriate play-based learning, but also identified significant ongoing challenges with facilities, curriculum development, and staffing, suggesting the need for increased funding and professional development.
Uncertainties Remain
The California Budget & Policy Center analysis noted that TK funding flows through the state's Local Control Funding Formula using average daily attendance, with a per-ADA base grant of $10,256 in 2025-26 plus an additional $5,545 per ADA to maintain the required 10 to 1 student-to-adult ratio. The analysis identified a gap in funding for English learner TK students after the state removed the English language proficiency assessment as developmentally inappropriate. Policymakers addressed it with $7.5 million in supplemental funds and a proxy methodology, the center reported.
The governor's office has asserted that test results and student outcomes continue to improve and that students are making gains in English, math, and science, attributing these broadly to the state's historic education investments including TK. However, no independent published evaluation isolating TK's specific contribution to academic outcomes was identified in the available sources. The announcement did not separate TK's impact from other concurrent investments such as community schools, expanded learning programs, and universal meals, making the claim contested.