This is new to me, wondered if anyone had experience of this.
I work in a faith school and happily follow the bit in my contract about 'upholding the Catholic ethos of the school'. Attend Mass with the pupils when required etc. I'm not Catholic but did attend a Church school of another denomination and have absolutely no issue with the existence of faith schools.
There's an INSET day next year and half the morning is a mandatory staff Mass in the Church attached to the school. Not sure why this seems an unreasonable expectation. TAs are normally only required to attend statutory training in Safeguarding etc and that is usually done as a Twilight.
It just seems odd that they are making it compulsory for all staff, one third of whom are not Catholic.