An extra $2 billion has been promised by the NSW government to build or upgrade an additional 44 schools across the state.
Fourteen brand new projects will be funded, and another 30 for which planning is underway.
The money has been set aside in the state's 2021/22 budget, to be handed down by Treasurer Dominic Perrottet next week.
The projects funded include new primary schools in Gregory Hills and Westmead, a new selective high school in Southwest Sydney and a new high school in Marsden Park.
The relocation of Wee Waa High School is also included, as well as funding for stage two of the Jordan Springs Public School.
Premier Gladys Berejiklian on Wednesday told reporters construction on the new schools will start next year.
"What this means is for growing communities like Gregory Hills, and for many others across the state, their long awaited schools will now be delivered," she said.
"It's hard work at the best of times, but when your state's been through drought and natural disaster and pandemic to find an extra two and a bit billion dollars to invest into new and upgraded schools is really good news for our community."
Education Minister Sarah Mitchell says the investment will build on the 100 new schools the government has already delivered in its tenure.
"We have spent more than $7 billion on new and upgraded schools," she said.
"The additional funds in this budget grow the pipeline to $7.9 billion worth of investment in new and upgraded schools over the next four years."
It comes after NSW Auditor General Margaret Crawford in April found the agency responsible for delivering new school infrastructure has not been planning far enough in advance.
The currently funded infrastructure program will not meet forecast classroom requirements for 2023 and beyond, she wrote at the time.
"Accordingly, it is vital that new funding is prioritised to projects which best meet demand," Ms Crawford said.
