Your school will have a designated safe guarding lead (DSL) who is available to contact at all times, including over school holidays.
The school website ought to make it obvious how to contact this person.
Sometimes they have an online system of reporting concerns, for example, which will be monitored.
Have a look at the website, it should show you the best way to contact someone. Then make sure you include your details, your child's name, everything she has said about the incident, and the best way that they can contact you. Make it clear that you would like some kind of follow up so that you know this has been actioned.
If you don't hear anything for a couple of days, at that point I would consider taking it further, and contacting local authority safeguarding (again, you can Google this).
Best case scenario, either your daughter has got the wrong end of the stick, or the curate is still early in his training and hasn't yet grasped what is and is not an appropriate way to conduct himself in schools. In that case, it's important to flag it, as there is a clear training need here at the very least.
Worst case, there is something more sinister going on.
Does your daughter attend church or a church youth group, OP? I was wondering if there are any other ways this guy could have access to her that you need to be careful about.