If the surgery was 2 hours, you can use it for 2 CEUs. A letter from the surgeon would be appropriate.
Yes, this could count in Category D or possibly the EBP Category for 2016-2017. Please see the EBP Category requirements for more information.
No. Because you are working with a student and not a Certified Athletic Trainer or other licensed or accredited healthcare provider, it would be considered below entry-level.
Yes, if the student is a Certified Athletic Trainer.
The first instance would qualify, but the second would not. Instructing students, who are considered below entry-level, does not count for CEUs.
Yes, if students are Certified Athletic Trainers or other licensed/accredited healthcare providers.