Electronic AAC devices will require connection to the internet for backups and software updates. In line with internet safety policies, most educational settings' Wi-Fi connection limits which websites can be accessed on devices- often excluding AAC supplier specific sites. A working relationship with your internal IT services can help overcome this as there is often a simple solution to this problem.
Are there any other considerations your team feel are important to overcome?
It can be helpful to work collaboratively and map these out during a discussion- remember there is no right or wrong- it is about identifying a path forward to achieving a good policy.