noun
kindergarten closing ceremony
Held at the end of the school year in March, before spring break. Specific to kindergartens (幼稚園) and similar early childhood settings.
先週、娘の幼稚園で終園式がありました。
Last week, my daughter's kindergarten had its closing ceremony.
終園式では、子どもたちが歌を歌います。
At the closing ceremony, the children sing songs.
終業式 is the closing ceremony for elementary, junior high, and high schools, whereas 終園式 is specifically for kindergartens.
Compound of 終 (end) + 園 (kindergarten) + 式 (ceremony). The term is straightforward and modern.