Schools and nurseries no longer send out letters to alert parents that a child in the school has head lice. There are a few reasons for this. Most schools and nurseries are likely to have a few children with head lice at any one time. On that basis, ‘alert’ letters could potentially be required every day. ‘Alert’ letters also frequently lead parents to attempt to treat their children preventatively, which is not effective or advised. Head lice infection cannot be prevented, and overuse of insecticide treatments may lead to resistance. Have a look through the advice and guidance provided by NHS Scotland. 25-Head Lice Facts Detection Treatment-Oct2017-English