An inquest has given the causes of death for headteacher Emma Pattison, 45 and her daughter Lettie, who are thought to have been killed by her husband George, 39, at Epsom College, on 5 Feb.
Campaigners have said police's choice of wording risks underming the "epidemic" of violence against women and girls.
Headmistress Emma Pattison, 45, was found dead alongside her husband George, 39, and seven-year-old daughter Lettie.