das Schulgebäude
school building
The building or complex of buildings in which a school is housed and where classes take place.
Das alte Schulgebäude wird nächstes Jahr renoviert.
The old school building will be renovated next year.

school building
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school building
The building or complex of buildings in which a school is housed and where classes take place.
Das alte Schulgebäude wird nächstes Jahr renoviert.
The old school building will be renovated next year.

The word is made up of 'Schule' (school) and 'Gebäude' (building). As with most compound nouns, the last word, here 'das Gebäude' (the building), determines the article of the whole word.
Das neue Schulgebäude hat eine moderne Turnhalle.
The new school building has a modern gymnasium.
To express movement into the building, you use the preposition 'in' with the accusative. To describe a location inside the building, you use 'in' with the dative.
Die Kinder rannten schnell in das Schulgebäude, als es anfing zu regnen.
The children quickly ran into the school building when it started to rain.
Common verbs connected with 'Schulgebäude' (school building) describe construction, change, or use. Typical ones are: ein Schulgebäude 'bauen' (to build), 'renovieren' (to renovate), 'betreten' (to enter), or 'verlassen' (to leave).
Wegen der Renovierung dürfen wir das Schulgebäude nicht betreten.
Because of the renovation, we are not allowed to enter the school building.
school
'die Schule' and 'das Schulgebäude' can both mean the building where lessons take place. In this sense, they are very similar. However, 'die Schule' is more general and can also mean the institution or the lessons. 'das Schulgebäude' is more precise when you really mean only the building, for example when talking about construction work, safety, or the way to the entrance.

Das alte Schulgebäude wird in den Sommerferien renoviert.
The old school building is being renovated during the summer holidays.
Vor der Schule warten viele Eltern auf ihre Kinder.
Many parents are waiting for their children in front of the school.