Hundreds of public school workers in NSW tested positive to coronavirus this week, but the government has heralded the school return as a "major achievement".
Premier Dominic Perrottet says he wants to focus "on the positive" after people said returning children to classrooms "couldn't be done".
"What I saw this week was smiles on so many kids' faces right across the state as they returned back to class. We had a plan, we've resourced that plan, we executed that plan," Mr Perrottet said.
Some 86 per cent of school children were back in classrooms this week, Education Minister Sarah Mitchell said on Friday, and that didn't include schools in the state's west, which go back next week.
While 617 staff across 438 schools tested positive for COVID-19, Ms Mitchell said casual teachers and existing staff had been able to cover for them.
"We have been able to manage those staffing absentee rates with the programs that we've had in place," she said.
The state has not yet had to draw on additional staff such as final-year university students or department executive staff.
More than 2400 primary and secondary students tested positive this week.
The education department is distributing 17.5 million more rapid antigen tests to maintain testing protocols for the first four weeks of term.
Some 41.6 per cent of NSW's primary school-aged children have received at least one vaccine dose, while 42.8 per cent have received a booster (or top-up for immunocompromised people).
Those aged 16 and 17 are eligible for boosters in NSW health clinics, following the advice of the Australian Technical Advisory Group on Immunisation.
NSW recorded 10,698 new coronavirus cases and 31 deaths on Friday amid signs of a stabilising outbreak as more health staff return to work.
Hospitalisations fell to 2494 on Friday while ICU admissions remained at 160, with 75 now on ventilators, an increase of seven on the previous day.
Case numbers have subsided from peaks in mid-January, but it's anticipated the return of children to classrooms could cause case numbers to rise again.
Mr Perrottet says hospitals are operating "well within capacity", allowing elective surgery to resume in private hospitals and non-metropolitan public hospitals from Monday.
Chief Health Officer Kerry Chant said it was pleasing to see hospitalisations and ICU admissions decrease, but people on ventilators remained at "a more constant level".
"We expect that to be a little bit slower in declining because a number of the patients have got longer length of stays in ICU when they are ventilated, but we will see that number come down as well," Dr Chant said.
Case numbers and hospitalisations are plateauing and more health staff are back on the job, but tracking the spread of the virus in the community is still a challenge.
"One of the pieces of the puzzle we don't know is just what is the proportion of people that have actually been infected? Because we know that not everyone will have symptoms," Dr Chant said on Friday.
More than a million people who are temporarily immune after being infected, the booster rollout, and "the behaviours that individuals take in protecting themselves and their loved ones", were helping lower community transmission, Dr Chant says.
Healthcare settings still have a "Red" status, the highest of the three in the state's COVID-19 risk monitoring dashboard, updated weekly.
But "available metrics continue to point towards a stabilisation of the outbreak".
As of Monday, 3034 health staff were in isolation after potential exposure to the virus, down from 4523 the previous week.
