Rooms in five of the Island's schools have been found to have above average levels of radon, a naturally occurring radioactive gas.
The government reassures there are no immediate health concerns.
It comes following an inspection where 97% of schools and UCM were well within the legal radon limit, with minor issues found in 14 rooms.
These were at Kewaigue, Scoill Vallajeelt, St Johns, St Thomas's Church of England, St Ninian's and UCM.
Staff, students and parents have been informed and minor works will take place before the areas are resurveyed.
Government says the risk in the school environment is low and immediate action is being taken, with affected schools continuing to operate as normal.
Illegal immigrant turned back at Manx border can't stay in UK
Bank scammers warning as calls target Island residents
Island to extend UK VAT cut on power, says Treasury Minister
Woman thanks mystery van driver after daring sea rescue
Stay off damaged slipway in Laxey, says local authority
MHK sues attorney general and returning officer over election votes
Islanders reminded to keep challenging domestic abuse beyond October
