Transitional kindergarten (TK) in California was introduced in 2012 for children whose birthdays fell between September 2 and December 2, making them too young for regular kindergarten but eligible for TK. It serves as a two-year program to prepare children for elementary school. As of 2021, the state expanded eligibility to include all 4-year-olds over a five-year initiative costing $2.7 billion. Starting fall 2024, children turning 5 between September 2 and June 2 are eligible for TK. By fall 2025, all children turning 4 by the start of the school year will qualify. Many districts are already offering early enrollment options, so parents should check with local education authorities for specific eligibility details.
