Schools require large bandwidths and can run into service problems when hundreds of students and teachers are accessing the internet.
Over the next 18 months, the funding will deliver high-speed internet to over 2000 NSW public schools.
Once complete, the upgrade will rollout over 5200km of fibre across NSW, making this one of the largest fibre networks in the world.
Minister for Education Sarah Mitchell said the project will give students access to new immersive learning opportunities.
"I want to ensure every child in NSW has the opportunities to be the best they can be, no matter where they live or what their circumstances may be,” Ms Mitchell said.
Learn more about infrastructure and upgrades to NSW public schools.