NYAS application doubt

In the application, they are asking for contact information for a teacher or any school administrator. When I submit the application, will they send an email to the school notifying them that I am applying? Our school doesn't actively encourage us to apply for these programs at this point of the year, and I don't think they are very aware of them. Teachers also don't provide their emails since they aren't very close with us. What should I do? Also, do you put the parent signature using any pdf editor or insert an actual image of the signature?