This fall, California will make transitional kindergarten available for all 4-year-olds. But fewer parents know about the program than they did just a few years ago, according to new surveys conducted by the Stanford Center on Early Childhood. In 2021, California launched an ambitious plan to make transitional kindergarten (TK) available for all 4-year-olds by the 2025-26 school year, creating a brand new grade level. Since then, districts began accepting more 4-year-olds by expanding the birthday cutoffs each year.
