All those who come into contact with children and families in their everyday work, including practitioners who do not have a specific role in relation to safeguarding children, have a duty to safeguard and promote the welfare of children. School staff (both teaching and non-teaching) should be aware of the local procedures to be followed for reporting concerns about a particular child. This will normally be via the school's d esignated senior member of staff or their nominated deputy or if neither are available, another senior member of the school's staff.
(Taken from Dfes publication 'What to do if you're worried a child is being abused - Summary' ref: 04319-2006BKT-EN)
The following link provides some further guidance on safeguarding.