Children are not permitted to bring mobile phones onto school premises, from time to time a circumstance may arise where a child having a mobile phone might be needed. Permission needs to be sought from the school headteacher prior to this.
Please find links to some useful information leaflets:
http://www.childnet.com/ufiles/Supporting-young-people-online.pdf
http://www.childnet.com/ufiles/Young-people-and-social-networking-A.pdf
http://www.childnet.com/ufiles/Online-gaming.pdf
https://www.nspcc.org.uk/preventing-abuse/keeping-children-safe/share-aware/
https://www.nspcc.org.uk/globalassets/documents/advice-and-info/share-aware.pdf