You do not need a license to teach jewelry making. However, you should take a variety of classes in order to learn the different techniques used in making jewelry so that you can properly train your students.
If you are emplyed by a company to teach IT then no. You only need there requirements witch is usually a certification like for Microsoft you need a MCT (Microsoft certified Trainer). If you are...
In most places, no license is required. In fact, most countries don't even require a certification. Which is why there are always a number of shady characters claiming to teach the ultimate fighting...
I don't think so. I live in CT, but I take Tang Soo Do karate. I have been taking it for 6 years and I am a second degree blackbelt. I teach karate and I'm on Demo Team. I don't think you need a...