Hugh Porter, the headteacher of Joseph Rowntree School, is right to recognise many young people experiment with cannabis, but he is also right to exclude the pupil who brought the drug into his school (March 16).

Cannabis is illegal, so parents and other pupils need to know it will be kept out of schools.

The headteacher had to take tough and immediate action and I congratulate him for doing so.

Hugh Bayley MP,

Holgate Road,

York.

Updated: 09:32 Friday, March 18, 2005