De or het oldschool?

The correct Dutch article is:

de oldschool

Meaning (Dutch) een bepaalde periode in het verleden

How to use oldschool

the oldschoolde oldschool
this oldschooldeze oldschool
that oldschooldie oldschool
our oldschoolonze oldschool
your oldschooljouw oldschool
every oldschoolelke oldschool
which oldschool?welke oldschool?
a big oldschool / the big oldschooleen grote oldschool, de grote oldschool

Meaning, plural, diminutive, pronunciation and translations: WikiWoordenboek (Dutch Wiktionary) (CC BY-SA 4.0). Example sentences: Tatoeba (CC BY 2.0 FR).