You can generate email lists for your students and parents of students by going to PowerTeacher Pro and clicking on the "Class" icon along the left side
And click on the email class link.
Select any emails that you want and scroll to the bottom
Click on the build list button
and then copy the emails that appear
Switch over to your email and compose a new email. Best practice is to address the email to yourself and to add all the student/parent emails to the bcc field
Once you have composed the email, it's ready to send.