Children usually attend kindergarten (scuola dell'infanzia) beginning at the age of three and continue for three years. All children who are at least two years and five months old when kindergarten begins in September may attend. Kindergarten is not mandatory. The period of care is usually until around 3:00 p.m. Individual kindergartens have the option of extending their hours until evening, if there is demand. Fees for kindergarten depend upon parental income. Registration is held every year in January in the kindergartens themselves.