Diocesan preparatory school email address

I'm happy to help! However, I need more information to provide a specific email address for a Diocesan Preparatory School.

Could you please provide me with the following details:

1. The name of the Diocesan Preparatory School you are looking for?
2. The location or city where the school is situated?

Once I have this information, I can try to provide you with the email address of the school.