You can only do this if:
- "You make an application to the head teacher in advance (as a parent the child normally lives with)"
- "there are exceptional circumstances"
Government guidance to head teachers is as follows:
Head teachers should only authorise leave of absence in exceptional circumstances. If a head teacher grants a leave request, it will be for the head teacher to determine the length of time that the child can be away from school. Leave is unlikely, however, to be granted for the purposes of a family holiday as a norm.
