Unfortunately all schools have problems with headlice because of the numbers of children in a confined space. It only takes one untreated individual to re-infect the rest of their class.

The only way to ensure your child's head remains clear is to check their head regularly. It is helpful if long hair is kept tied up or back to reduce the risk of infection. 

Below are a number of links below which you may find helpful in managing Headlice.

http://www.nhs.uk/conditions/head-lice/pages/introduction.aspx

http://www.chc.org/