The 15-year-old schoolgirl was taken out of an exam and strip-searched by two female Met officers.
Hundreds of protesters have marched through north London in support of a black pupil strip-searched at school after being wrongly suspected of carrying drugs.
A report released this month found the search of the 15-year-old girl, known as Child Q, was unjustified and racism was “likely” to have been a factor.
Activists marched chanting “power to black girl Child Q” and carried banners saying “protect black kids”.
The Met Police has apologised.
The girl’s family is suing her school and the force, which said its officers’ actions “should never have happened”.
Speaking via her lawyers, the girl said she wanted “cast-iron commitments to ensure this never happens again” and thanked supporters.
Protesters marched from Stoke Newington Police Station to Hackney Town Hall with placards saying “no to racist police” and “hands off our children”, while chanting “love for Child Q”.
A two minutes’ silence was also held in support of the girl.
During the incident in 2020, the girl was taken out of an exam to the school’s medical room and strip-searched by two female Met police officers searching for cannabis, while teachers remained outside.
The victim’s mother told the safeguarding review, by City of London and Hackney Safeguarding Children Partnership, that after the strip-search, her daughter had been “asked to go back into the exam” she had been sitting, with no teacher asking about her welfare.
Her family said the girl had changed from “top of the class” to “a shell of her former bubbly self”, and she was now self-harming and required therapy.
The Independent Office of Police Conduct (IOPC) said its investigation was complete and its report was being “finalised”.
It added three police constables had been served with notices last year advising them they were under investigation for misconduct, “over their roles in either carrying out the strip-search or involvement in supervising it”.
Scotland Yard said the officers’ actions were “truly regrettable” and it “should never have happened”.