Girls defame teacher on Facebook.
Twenty-nine pupils at Grey Coat Hospital School for girls in Westminster, London, signed up as members of the page, named The Hate Society.
Thy were suspended for between two and 15 days from December 23. The site has been taken down and most of the pupils, aged 11-18, will be back in school on Tuesday.
The teacher concerned is receiving counselling.
Headteacher Rachel Allard confirmed: "A number of pupils have been suspended for between two and 15 days after they posted a series of deeply insulting comments."