Pupil absence requests
For religious observance
You must treat the absence as authorised.
However, the day being taken as absence must be exclusively set apart for religious observance by the religious body to which the pupil's parent(s) belongs.
If you have doubts, seek advice from the religious body about whether this is the case.
This is explained on page 86 of the DfE's statutory attendance guidance.
For a religious family ceremony
This includes requests to miss school to attend christenings and bar/bat mitzvahs. Approval for these leaves of absence is at your discretion – treat them as 'exceptional circumstances'.
Requests of this kind should be processed in the same way as any ordinary absence request,