Thu 11 Nov 2006School pupils' drug use 'increases'Some 40 per cent of school pupils aged 15 and 16 have tried drugs, with little difference in usage between girls and boys, according to a report published today.Experience of cannabis in the 15-16 age group increased by 8 per cent to 40 per cent between 1999 and 2003. The use of solvents was also particularly high.