Your parents taxes paid for the history teacher that taught you in high school.Did you tip him/her?
If you have a paid instructor they have been paid.If they take you streamside and coach you to fish they are an instuctor/ guide !!!
Tipping is a response to services recieved.The better the services the better the tip. I have never tipped an instructor nor recieved a tip as an instructor and I worked in the casinos of Vegas!
Dennis