Categorize the comment on the basis of threat. If the comment is threatening output Yes, otherwise output No.

If it were true that you just received a(n) email from a teacher with that many errors, and assuming you have the ability to count and correct each one, then you'd be able to provide a specific number instead of an ambiguous range, along with examples of the most egregious mistakes. SYH won't help with this fairy tale, but I can.

"Teacher" is singular, "them" and "their" are plural. You flunked.
No

No kidding!
No

This stuff gets weirder by the day. The mighty U.S. government cowed by a handful of hicks. Bet ISIS, Russia, China, al Qaeda, N. Korea, etc. are having a ball planning their next strategy against Fortress America.
Yes