By Hazel Shearing
Education correspondent, astatine NAHT league successful Telford
Head teachers successful England should halt serving arsenic Ofsted inspectors, says the sister of a caput who took her ain beingness aft an inspection.
Ruth Perry died portion waiting for a study that downgraded her school.
Prof Julia Waters was speaking to members of a caput teachers' national which is besides asking members who enactment arsenic Ofsted inspectors to see quitting.
Ofsted said astir schoolhouse leaders thought inspections were "constructive and collaborative".
It comes arsenic a schoolhouse successful Cambridge is acceptable to situation Ofsted successful court for not pursuing close procedures, aft an inspection near its caput teacher feeling suicidal.
In an affectional code astatine the National Association of Head Teachers (NAHT) conference, Prof Waters said a "terrible injustice" had been done to her sister, and she would not "give up until Ofsted is radically reformed".
Ms Perry took her ain beingness successful January, weeks aft an Ofsted inspection. The Ofsted report, published aft her death, downgraded her school's standing from Outstanding to Inadequate - going from the apical to the bottommost of the grading scale.
"The injustice of that one-word judgement destroyed Ruth's career, her satellite and her consciousness of self," Prof Waters said.
She said caput teachers who served arsenic inspectors were "no doubt" doing their "best", but were moving with "a flawed, inhumane system".
She called connected them to region references to Ofsted grades from their websites and schools.
"Stand up to Ofsted, talk out, instrumentality down your banners, manus successful your badges," she said. "Ofsted indispensable beryllium reformed."
The NAHT besides passed an exigency question asking members to "consider refraining from carrying retired inspections".
Prof Waters previously told the BBC that Ofsted inspections should beryllium paused, truthful that an autarkic enquiry into what happened astatine Ms Perry's school, successful Reading, could instrumentality spot - arsenic good arsenic a reappraisal of the civilization of inspections astatine Ofsted.
Last week, Amanda Spielman, Ofsted's main inspector, told the BBC's Sunday with Laura Kuenssberg programme that she believed the findings of past year's inspection were "secure".
She said the inspection squad had "worked with the professionalism and sensitivity that I would expect".
Asked if she had concerns astir what happened, she replied: "From what I've seen, I don't person immoderate crushed to uncertainty the inspection."
Prof Waters said Ms Spielman's effect was "totally inadequate".
Ofsted has described Ms Perry's decease arsenic a tragedy.
A spokeswoman for Ofsted said their inspections were "first and foremost for children and their parents - looking successful extent astatine the prime of education, behaviour, and however good and safely schools are run".
"We ever privation inspections to beryllium constructive and collaborative and successful the immense bulk of cases schoolhouse leaders hold that they are," she added.