The BBC has been contacted by hundreds of users who claimed they had been wrongly banned from the sites.
The trial had been set as a test case for 1200 other school districts making similar claims.
YouTube said it worked with experts to provide appropriate experiences. TikTok said it was disappointed Ofcom had not acknowledged its safety features.
Meta has submitted a collective redundancy notification to Ireland's Department of Enterprise.
The glasses will go on sale sometime in autumn and allow Google's artificial intelligence product to interact with a user.
A cyber security expert says deleting chat history could lead to a lack of accountability if things go wrong.
The biggest tech firms are set to sell millions of smart glasses despite growing privacy concerns.
The platform said it would remove end-to-end encrypted messages, a major U‑turn by parent company Meta.
Meta and its subcontractor disagree over why over 1000 Kenya-based workers were made redundant.
