If I, as a Canadian school in Canada decide to present a DVD to my class, or make a photocopy of a book, for educative purposes, the US or other countries cannot arrest me.
Other than the fact that you are breaking Canadian copyright laws. So no, the US can't arrest you, but the RCMP might.
Can you convert that into a more familiar unit, like Library of Congresses?
You know the Library of Congresses is a pretty reliable machine. Does anybody know what its downtime is?
The downtime for the Library of Congress is 4:30 pm - 8:30 am, Monday - Friday, and all day Sunday. That translates into an uptime of about 28.6%. If you take the Secret Service 68% as uptime, then it would be 2.4 Library of Congresses.
Life is a healthy respect for mother nature laced with greed.