A child who attends kindergarten; a preschooler (typically around ages 3–5).
娘は来年から幼稚園生になる。
My daughter will start kindergarten next year.
幼稚園生の遠足で先生が写真を撮った。
The teacher took photos at the kindergarteners' field trip.
幼稚園生はまだ給食に慣れていないことが多い。
Kindergarten children often are not yet accustomed to school lunches.