While the city's public schools - like those across the rest of the state - will remain open, parents are being urged to keep their children at home from Tuesday.

"Because nearly 30 per cent of children are already being kept out of school, for practical reasons NSW is encouraging parents to keep their children at home," Ms Berejiklian told a press conference.

"This will ensure there is only one unit of work, whether the student is at home or at school.

"No child will be turned away from school."

Across the city, individual schools have been contacting parents, explaining what arrangements are being put in place for students' continued learning as increased social distancing measures are introduced around the state.

All three of the city's public high schools - Wagga, Kooringal and Mount Austin - have begin preparations to teach students remotely.

Supervision at schools will be provided for the children of parents and carers who are working in services considered essential like health industry, education, supermarkets, pharmacies, freight and logistics when there is no other option, according to schools.

"The expectation from the Department of Education is all other children are to remain at home under the supervision of their parents. Further advice about accessing online learning and other learning avenues will be made available in the coming days," Wagga High School principal Chris Davies told parents via an email update.

On Monday, Catholic Schools NSW announced it would take a similar position to public schools.

Wagga's Catholic schools will remain open, but plans are being put in place for students to learn from home.

"As of today, our schools will begin to release Chromebooks/iPads and other learning materials to our students to enable Learning from Home to commence as required," parents were told.