Hi, welcome to the site. Think about all the other professionals that your setting works with. If unsure ask your management who they are eg. local authority departments - social services, health professionals, police and for any policy information that shows the procedures involved.
Review evidence from different perspectives and come to a valid conclusion or reasoned judgement
There's details on the importance of multi-agency working here,
the legal requirements - Working together to safeguard children 2015
on gov.uk that will help you evaluate how the setting's procedures match xx
from page 7, point 10:
For children who need additional help, every day matters. Academic research is consistent in underlining the damage to children from delaying intervention. The actions taken by professionals to meet the needs of these children as early as possible can be critical to their future.
and point 11;
Children are best protected when professionals are clear about what is required of them individually, and how they need to work together