For an administrator at the site, wanting to do an email to the parents who answered Yes to the Pesticide Notification:
KEEP STU AUT IF AUT.CD = APN AND AUT.ST = 1
Then go to School Info, Send Emails. Click on "Add Recipients"
On the "Search for Email Addresses by" screen, choose "All Students Kept"
De-select "Students"
Click on "Add All"
Click OK. It takes you back to the body of the email. Compose email, and click Send Email.