Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
What contact do you have with your son?
have the school seen a copy of this"Order"
When did you last see your son?
There is no chance that the Order said that you no longer had Parental rights.
You should politely inform the school that there is no such Order, that you still have Parental Responsibility and that you are fully entitled to the information that you have
You may wish to consider making an applictaion for a Child Arrangement Order to discover what your son actually does want - rather than relying on what hi smother says.
Please ask if you need further details