Sydney schools to get more STEM teachers

About 900 new full-time science and maths teachers will be employed in NSW public schools under a plan to be announced in the state budget.

The positions will be created in areas of population growth, including Sydney's northwest and southwest.

"Teachers are the engine that drives our education system, so it is essential that we not only recruit them, but continue to offer comprehensive support to teachers throughout their careers," Education Minister Rob Stokes said in a statement on Monday.

It's part of a record $15 billion that will be spent on schools this year, he said.

The package will also provide professional development support for teachers, targeted learning programs and wellbeing support for students, as well as operational funding.

"We are not just creating top quality learning facilities, but also investing heavily in our teachers to educate and inspire our next generation," Mr Stokes said.

The NSW budget will be delivered on Tuesday.