De or het vwo-school?

The correct Dutch article is:

de vwo-school

How to use vwo-school

the vwo-schoolde vwo-school
this vwo-schooldeze vwo-school
that vwo-schooldie vwo-school
our vwo-schoolonze vwo-school
your vwo-schooljouw vwo-school
every vwo-schoolelke vwo-school
which vwo-school?welke vwo-school?
a big vwo-school / the big vwo-schooleen grote vwo-school, de grote vwo-school

Dutch words ending in vwo-school

vmbo-havo-vwo-school

In compound words, the last part decides the article. See the rule