Ignorance of the law is NOT a defence. Saying you are not a lawyer will never hold up in court!
i. This is not a catch all allowing everything to be copied at will. It is a limited and specific issue.
ii. See i.
iii. Schools are not news outlets.
iv. This is specific to incidental things. For example, you're filming a performance on your stage and someone's mobile goes off and plays a song which is copyright.
v. Again, this is very limited to specific instances.
vi. Not relevant.
vii. Recording of materials in schools require licenses. See
A Guide to Copyright Licensing in Schools
viii. Personal use is not relevant in a school.
ix. Non-profits also require a license. See
A Guide to Copyright Licensing in Schools
You don't own data on the servers, but the school does, and you are the primary technical manager of those systems, so are responsible for them.
As I said, I never implied you were personally responsible for these issues, but your school is. Turning a blind eye simply because you don't know the law will not cover you if you are dragged in front of a disciplinary panel after the school ends up in trouble because of it.