tation; coercion and threats, and o coercing others into sharing images of themselves or performing acts they’re not comfortable with online 458. It is important that schools and colleges consider sexual harassment in broad terms. Sexual harassment (as set out above) creates a culture that, if not challenged, can normalise inappropriate behaviours and provide an environment that may lead to sexual violence. Harmful sexual behaviour 459. Children’s sexual behaviour exists on a wide continuum, ranging from normal and developmentally expected to inappropriate, problematic, abusive and violent. Problematic, abusive and violent sexual behaviour is developmentally inappropriate and may cause developmental damage. A useful umbrella term is 140 The Voyeurism (Offences) Act 2019 which amends the Sexual Offences Act 2003 to make upskirting a specific offence of voyeurism. The Act came into force on 12 April 2019. 141Project deSHAME from Childnet provides useful research, advice and resources regarding online sexual harassment. 142 Consensual image sharing, especially between older children of the same age, may require a different response. It might not be abusive – but children still need to know it is illegal- whilst non-consensual is illegal and abusive. 116 “harmful sexual behaviour” (HSB). The term has been widely adopted in child protection and is used in this advice. HSB can occur online and/or face-to-face and can also occur simultaneously between the two. HSB should be considered in a child protection context. 460. When considering HSB, both ages and the stages of development of the children are critical factors. Sexual behaviour between children can be considered harmful if one of the children is much older, particularly if there is more than two years’ difference or if 