De or het scholenfusie?

The correct Dutch article is:

de scholenfusie

Rule Words ending in -tie and -sie: almost always de. See the rule

How to use scholenfusie

the scholenfusiede scholenfusie
this scholenfusiedeze scholenfusie
that scholenfusiedie scholenfusie
our scholenfusieonze scholenfusie
your scholenfusiejouw scholenfusie
every scholenfusieelke scholenfusie
which scholenfusie?welke scholenfusie?
a big scholenfusie / the big scholenfusieeen grote scholenfusie, de grote scholenfusie