Row Over School 'Drinking' Survey
A "big brother" Ofsted survey which asks children as young as 10 if they have been drunk or smoked cigarettes has been criticised by teaching unions.
Ofsted says as the survey of 120,000 children in England aged between 10 and 15 was anonymous - parental permission was not required.
But teaching unions say children can be identified from the full postcodes the survey asks them to provide.
Education inspectors insisted these would not be used to identify children.
The inspection watchdog said the results of its Tellus2 survey - covering home life, health and bullying - would be used to help local authorities assess their success in meeting the needs of children and young people.