Educating a child in a verysmallschool can cost three or four times the cost of educating that same child in a larger school, but the county - like many others across Wales - has small schools dotted across the landscape.
"Speaking as a secondary school principal I would be very concerned about the easy access to drugs in all the towns and small villages of Ireland at the moment, " she said.
It's important to note that the Toronto study was verysmall, and it is impossible to draw conclusions from it, said Matthew Miller, associate professor at the Harvard School of Public Health, who co-wrote the editorial that accompanied the study.