Teachers are today expected to back fresh walkouts in the summer if progress is not made in resolving a bitter dispute over pay, pensions and conditions.
Delegates at the National Union of Teachers (NUT) annual conference in Brighton are due to debate a priority motion seeking co-ordinated national strike action in the week beginning Monday June 23.
The move comes just weeks after the NUT staged a national walkout, and raises the prospect of widespread disruption to thousands of schools in England and Wales in the summer term.
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Even the help of rain delays could not save England's desperate attempt to push for a draw in Perth as the hosts claimed the series win.
Guillier conceded a "severe defeat" defeat to his supporters as the result came in.
The outage struck Hartfield-Jackson Atlanta International Airport at around 1pm local time, stopping all outgoing flights.