I have already done this.

Students will be assigned an email address to be able to log on to devices and access applications for the purpose of instructional learning. These emails will be their user names.  

 Student Use of Technology Policy

 Click the link to read. 

Parent or Guardian

If the user is under 18 years of age, a parent of guardian must also sign this
Agreement. As the parent or guardian of this student, I have read the district's policy on Student Use of the Internet and Electronic Communications. I understand that access to the Internet and electronic communications is designed for educational purposes and that the school district has taken reasonable steps to block or filter material and information that is obscene, child pornography or otherwise harmful to minors, as defined by the Board. I also recognize, however, that it is impossible for the school district to prevent access to all materials or information I might find harmful or controversial and I agree not to hold the district responsible for any such materials and information accessed by my child. Further, I accept full responsibility for supervision if and when my child's Internet or electronic communications use is not in a school setting.
I hereby release the school district from all costs, claims, damages or losses
resulting from my child's use of district technology devices, including use of the
Internet and electronic communications, including but not limited to any user fees or charges incurred through the purchase of goods or services.