Khan was found guilty of Harvey’s murder after a trial at Sheffield Crown Court and was detained for life in October, with a minimum term of 16 years.
The report, which examined the events leading up to his death, revealed several safeguarding shortfalls, and made 10 recommendations for the school, its trust, the local authority and the Department for Education.
The recommendations have been made public, but the whole report has not.
The BBC has asked to see a copy of the report, but SCCMAT, which runs All Saints, said it would not release it, citing privacy concerns.
According to the family’s lawyers, Irwin Mitchell, Khan moved to All Saints from another school, but his safeguarding and behaviour records were not requested or reviewed beforehand.
The lawyers said when the records were later transferred they were not read due to unclear responsibility – meaning staff were not aware of historic incidents involving violence, weapons references and anger.
The intended behaviour plan was also not implemented on arrival.
Irwin Mitchell said the report also found that weapons-related concerns were handled “inconsistently”.
After pupils reported in October 2024 that Khan had previously carried a knife and brought a BB gun on a school trip, staff carried out a search but failed to investigate further, complete a risk assessment or put a safety plan in place, and records were incomplete.
In December 2024, when an axe was found in his bag off-site, police were informed but no in-school follow-up occurred, which the review is said to have described as a safeguarding failure.
Asked if Irwin Mitchell’s summary of the report was accurate, SCCMAT said it would be “inappropriate to comment on how it has been characterised” as it was not releasing the report itself.