Year 9 students at St Ninian's High School are being asked to stay at home this Thursday.
It comes as the School is the latest to be hit by high staff absences.
Meanwhile, year 8 pupils are asked to on Friday.
It follows mock exams, which are taking place today.
Education boss retires
Steam Packet warns of sailing delays today
Know someone who's made a difference to their community?
Manx Classic Hill Climb cancelled for 2026
No complaints about car insurance in UK, says minister
Quarries closed to bikes because of health and safety
Bin service urges people to stop tossing batteries
TT course road closure causing bus diversions today