Taylor High School has called off its prizegiving due to be held tonight (Thursday) after a water scare in the area.
Around 6,000 customers have been told not to cook, drink or wash with their tap water following concerns over its taste and smell.
Nine schools, including Taylor, have been closed as a precautionary measure as Scottish Water investigates the problem.
The company has spent the night looking into the issues after customers reported concerns about the mains water.
The affected properties are in parts of Carfin, Newarthill, Chapelhall, New Stevenston and Dalziel Park.
Scottish Water is delivering bottled water and notices, advising people not to use the water, to households and businesses in the area.
Customers are asked not to use boiled tap water and to use their water only for flushing toilets.
A Scottish Water spokesman said: “After receiving contacts from customers about the taste and smell of tap water we investigated thoroughly and examined our network. We have advised customers in Carfin, Newarthill, Chapelhall, New Stevenston and Dalziel Park not to use their water for any purpose - other than flushing toilets - as a precautionary measure.
“We apologise for the inconvenience this has caused and we have been distributing bottled water to affected properties during the night.”
No new date has been set for the Taylor prizegiving which might now be held over until the new term starts in August.