Fake dating profiles have been set up by schoolchildren to "humiliate" teachers, amid union fears social media abuse is happening on a weekly basis.
Concerns have been raised at secondary schools over the use of TikTok with one school in West Dunbartonshire threatening that police would be called in.
Material described as "disgraceful abuse" included false allegations of paedophilia and homophobic slurs.
Seamus Searson, general secretary at the Scottish Secondary Teachers' Association, feared tech-savvy kids are able to create mash ups of teachers and post them on multiple platforms.
Mr Searson said: "The children are obviously taking photographs and they can take photographs in what might appear compromising situations.
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"They also can then record teachers, and mix and match the voices, and can put those voices to pictures or videos.
"Then they can Photoshop the pictures as well, put someone's head on another's body.
"Then, when you post it, it goes on to so many different platforms now.
"They could set up on some of the dating websites as well, putting teachers' pictures in - I've heard of examples of it.
"If you think about it, setting up somebody's profile, it's so easy to do, isn't it?
"In every secondary school I'd imagine there'd be instances of this every week, possibly.
"It's dealt with on most occasions without too much of a fuss.
"But youngsters don't always see the seriousness of some of the things that they do and that's why this needs to be dealt with."
A TikTok spokeswoman said: "We've already deployed additional technical measures and guidance, and we continue to proactively detect and remove violative content and accounts.
"While anyone can report inappropriate content in-app, we also partner with the Professional Online Safety Helpline to provide teachers with an additional way to report content."
A Scottish Government spokeswoman said: "Children learn about the safe and responsible use of technologies, including social media, as part of their general education under Curriculum for Excellence."
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