Mr Timpson's letter continued: "It is important that students and parents can be confident that those failures have been addressed and all necessary action taken.
"As the accountable people, at officer and political level, for safeguarding in East Sussex, I am writing to you to ask what steps you have taken to assure yourself that the safeguarding practice in the school has significantly improved."
More top news
Simon's Blog - The Sky At Night
Tuesday night's weather for the west of the region
Tuesday night's weather for the east of the region