Page last updated at 08:02 GMT, Friday, 25 September 2009 09:02 UK

Teacher switches off class wi-fi

Computers in schools
A school principal has switched off his school's wifi system

Another primary school in Northern Ireland has decided not to use wireless technology after a parent cited health fears, it has emerged.

Ballycarrickmaddy Primary removed its wi-fi system last year.

The Department of Education said there was no evidence of any health risk and only one other school in NI had decided not to use it, using cables instead.

The other school is Ballinderry PS in County Antrim, where the principal Ian Thompson, took the decision.

He said: "We don't really know the biological end of this, which is the thing which really concerns us.

"It's all right saying there's no heat from it, we accept that, but we don't know what's going on inside.

"I would like more reassurance really."

The Department of Education uses Classroom 2000, or C2K, to administer computers and their networks in schools.

Along with the Public Health Agency in Northern Ireland, they have pointed to a study by the Health Protection Agency in England, where preliminary results indicated there was no physical health risk from using wi-fi.

The World Health Organization has also said there is "no convincing scientific evidence" that the weak radiofrequency (RF) signals from wireless networks cause adverse health effects.

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