Amid overgrown weeds and deserted hallways, the trashed and empty classrooms of Macquarie Technology High School sit silently gathering dust in the darkness.

Since dwindling enrolments forced the state government to close the Western Sydney school in 2008, the building and its grounds on James Ruse Dr, have been abandoned to vandals and vagrants.

In 2007, the site was speculated to be worth more than $10 million.