A school leaders’ union has said it may take legal action against Ofsted following its failure to pause inspections in the aftermath of headteacher Ruth Perry’s death.

Ms Perry, who was headteacher at Caversham Primary School in Reading, too her own life in January while waiting for an Ofsted report which downgraded her school to the lowest possible rating, her family said.

Ofsted chief inspector Amanda Spielman has acknowledged the debate about reforming inspections to remove grades “is a legitimate one” but insisted school checks aim to raise standards and should continue.

Union NAHT said it has written to Ms Spielman to demand a suspension of Ofsted inspections while steps are taken to address the risk to the mental health of school staff and allow suicide risk prevention to be put in place.

NAHT said that if Ofsted does not meet its demand to work together to identify immediate action that can be taken then the union will proceed to issue a legal challenge.

General secretary of NAHT, Paul Whiteman, said: “The tragic death of Ruth Perry has shone a light on the intolerable pressure placed on school leaders and their staff during Ofsted inspections.

“It shouldn’t take a tragedy to force change but Ofsted has shown no inclination to change on its own. We have requested that Ofsted works with NAHT, as recognised representatives of school leaders, to identify and agree immediate actions that can be taken.

“It is essential that these actions are discussed and agreed with NAHT if it is to make any meaningful difference. It needs to be done with us, not to us. Up until now those requests have been ignored. As such, we have no alternative but to go down this route.

“Whilst Ofsted have issued warm words, that is simply not good enough and it has shown nothing like the understanding or urgency that this situation requires.

“School leaders are determined that this should be a watershed moment and that such a tragedy can never be allowed to happen again.”

NAHT has demanded a reply from Ofsted by Thursday, April 6.