kindergarten
US /ˈkɪn.dɚˌɡɑːr.tən/
UK /ˈkɪn.dɚˌɡɑːr.tən/

1.
a school or class for young children, usually between the ages of four and six, that prepares them for elementary school
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My daughter is starting kindergarten next fall.
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The kindergarten class went on a field trip to the zoo.