A top private school in Britain will now carry out random drug tests on pupils attended by around 1,400 students.
Students at the Cheadle Hulme School in Cheshire who are suspected of taking drugs will be asked to undergo mouth swabs, after permission from parents, The Sun reported.
A school spokesman said drug tests would be carried out "with proper parental consent, should it be deemed appropriate".
Headmistress Lucy Pearson introduced the policy after concerns that some pupils took illegal substances.
Fees at the school are up to 10,000 pounds a year. Around 1,400 boys and girls aged four to 18 attend the school.