Pubdate: Tue, 29 Feb 2000 Date: 02/29/2000 Source: Times, The (UK) Author: Anthea Goldsmith Note: Subjectline by MAP Sir, There are letters today under the heading "Legalise cannabis to stop crime". There is also a report on the rise in deaths from hard drug use. Do schools realise that when they threaten drug tests, some students move straight on from the relatively harmless cannabis to the infinitely more dangerous cocaine and heroin which are less likely to be detected in such tests? Yours faithfully, ANTHEA GOLDSMITH, 22 Well Walk, Hampstead, NW3 1LD.