Excellent resource. Will require modification for seniors.
Cyberbullying Lesson Plan
Lesson Plan
Published 5/4/16
Last updated on 5/16/19

Cyberbullying
Attached is a lesson plan for teaching about cyberbullying and how to respond to cyberbullying. The lesson plan centers around this Slate document:https://slate.adobe.com/cp/XbiZx/. The lesson plan can be found below and contains further details, such as the objectives, materials and resources, and procedures. It is expected to take 30-40 minutes.
I aimed this lesson for 3rd through 6th grade, but this lesson could be applied to middle and high school as well.