A mechanical digger has begun tearing down the old St Peter Port School.
The Les Ozouets campus was built in the 1960s.
Specialist contractors have been removing asbestos, and now a mechanical digger is being used to break the building down.
The site should be levelled by mid-August, to allow a new Guernsey Institute to be constructed.
Institute Head Tracey McClean says the new campus will offer opportunity to many post 16 students:
"In three years time hopefully we will be moving into a brand-new building, so it will mean that we can increase our provision and opportunities on the island.
There's nothing like learning in the classroom and being with a group of peers and sharing ideas."
Les Vardes to increase Guernsey's water storage capacity
150 tonnes of food waste going to landfill in Guernsey
Bed blocking leads to longer surgical waiting times in Guernsey
Seasonal beach restrictions for dogs and horses begin again in Guernsey
Occupation artefacts feature on new Guernsey stamp series
Let wildflowers grow: CI gardeners key to pollinator recovery
Bergerac will return to Jersey for second series
Deputies warned that Guernsey's minimum wage is lagging behind Jersey's
