das Klassentreffen
class reunion
An organized meeting of former students from a school class, often taking place years after graduation.
Nächstes Jahr haben wir unser 20-jähriges Klassentreffen.
Next year we have our 20-year class reunion.

class reunion
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class reunion
An organized meeting of former students from a school class, often taking place years after graduation.
Nächstes Jahr haben wir unser 20-jähriges Klassentreffen.
Next year we have our 20-year class reunion.

'Klassentreffen' (class reunion) is a compound noun made up of 'Klasse' (class; here in the plural/genitive form 'Klassen') and 'Treffen' (meeting). So it literally means a 'meeting of the class.'
Das Klassentreffen findet in unserer alten Schule statt.
The class reunion is taking place at our old school.
'Klassentreffen' (class reunion) is often combined with a number and the suffix '-jährig' to describe the anniversary, e.g. 'das 10-jährige Klassentreffen' (the 10-year class reunion).
Wir organisieren gerade unser 25-jähriges Klassentreffen.
We are currently organizing our 25-year class reunion.
Typical verbs used with 'Klassentreffen' (class reunion) are 'organisieren' (to organize), 'haben' (to have), or 'zu einem Klassentreffen gehen' (to go to a class reunion).
Gehst du am Samstag auch zum Klassentreffen?
Are you going to the class reunion on Saturday too?