The Department of Education, Sport and Culture says it is ‘deeply disappointed’ by a teachers’ union beginning escalated action short of strike.
Members of the NASUWT says it comes following 'failure of the Manx Government to improve pay and tackle excessive workload'.
The union announced the move less than a week into the start of the academic year.
Officials have confirmed there will be no further comment until after the State funeral on September 19.
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Nominations open for Manx cultural hero awards
Passport and immigration public counters to temporarily close
Overnight delay means today's sailings will set off late
Fireworks displays to kick off with event tonight
Second night of police roadside car checks finds less defects