A drug and alcohol expert says she is alarmed children as young as 13 and 14 are interested in buying the drug "ice".
Bunbury police say it shows the naivety of some of the students, who believed sugar was the drug.
The manager of the St John of God community drug service team, Bev Morton, says it is a real concern.
She said she was most worried by the fact that the students thought it was OK to buy the drug ice.
Students pretend to sell 'ice' (ABC News, 17/9/07)
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