Here is my district's new AUP2.0 policy. We've changed "AUP" to "ICT Policy" (Information and Communication Technologies)". We're going to create a document with more kid-friendly language for our K-5 students.
"Policy Database
The most complete listing of social media policies. Referenced by the world's largest brands and agencies. " This is not for K-12. They're social media policies for colleges/universities and, mostly, for large companies.
This is my district's new AUP2.0. We've named it "Employee Use of Information and Communications Technologies (ICT). This link goes directly to the pdf.
I especially like their "Student Planner Language" aup which is a condensed version of their AUP with kid-friendly wording. Other schools use a Student Technology Pledge or something similar that's easier to refer to and for kids to talk about.