noun
kindergarten pupil; preschooler; child in daycare
Refers to a child attending a kindergarten (幼稚園), nursery school (保育園), or similar early childhood facility. The term is neutral and widely used in news reports and daily conversation.
園児たちが元気に運動場を走り回っている。
The kindergarten children are running around energetically in the playground.
I often see children from the nearby daycare center out for a walk.