Do The Maths: Why The Kids Aren't Alright

At least one in seven secondary schoolchildren has tried illegal drugs and a fifth of 10 to 15-year-olds regularly get drunk, it found.

The survey of more than 100,000 pupils for Ofsted also found that the biggest worry for most children was their exams.

:: 15% of children aged between 12 and 15 had experimented with illegal drugs - including heroin and cocaine

:: 48% had consumed alcohol, with one in five claiming to have been drunk at least once in the past four weeks

:: One in six 14 and 15-year-olds admitted to getting drunk at least three times in the previous four weeks

The survey also revealed that the vast majority (79%) of children wanted more fun and interesting lessons.

Four out of 10 pupils said they wanted quieter and better behaved classmates, and many were stressed about their schoolwork.

Pupils' biggest worry was exams, with 51% naming this as a key concern.

More than a quarter of older pupils were worried about sex and relationships.

But the survey also provided a more positive picture of children's health.

Most children considered themselves to be healthy and said they took part in exercise at least three times a week.

Nearly three-quarters said they had never smoked a cigarette, and 80% of older children said they had never tried illegal drugs.

Chief inspector of education Christine Gilbert urged ministers and schools to "look hard" at the findings.

"More needs to be done to address children and young people's worries and concerns about how safe they feel, exams and tests, and what would help them learn better," she said.

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