Fourth school exposed as Omicron sweeps WA

Premier Mark McGowan says WA will eventually move to seven-day quarantining, but not yet. (AAP)

Western Australia has recorded 19 new local Omicron cases as students at another Perth school are forced into two weeks' quarantine.

There is growing doubt over the sustainability of the state government's hardline COVID-19 rules after Atwell College became the fourth school exposure site in as many days.