Ninjutsu is taught today through the Bujinkan, which is a collection of nine ryu-ha (lineages) - 3 specifically Ninjutsu and 6 being of Samurai origin.
There are quite a few Bujinkan training locations in Southern California - some actual dojo's and others training groups that meet in public places (like parks).
If you're close to Moorpark, CA, there is a Ninjutsu dojo, called Todai Dojo. They have a website, Moorpark Ninja).
Traditionally all martial arts were passed down within the family. It wasn't something that was shared outside the immediate family. There are ninjutsu schools where they teach ninja martial arts, but not too many.
Yes there are martial art schools that teach Kendo
There is no martial arts license required in California. However, to run a business will require a business license and meeting the appropriate health codes.
Jackie Chan does not teach.
It depends on the specific martial art. Most of the arts will teach something along the lines of defense against weapons.
All styles of martial arts do.
You would teach in a martial arts school. The Japanese would call it a dojo.
Many martial arts have the Axe kick, maybe just known by different names.
It takes dedication to learn a martial art. That dedication will eventually lead one to be able to teach.
Actually, kickboxing is a form of Martial Arts. And mostly, kickboxing schools do teach other disciplines. But if the major concentration of school is 100% kickboxing, then Kickboxing only.
yes,to find DR. Masaaki Hastsumi in Japan or Stephen K. Hayes in the United States. They teach help redifine ninjutsu in good ways. Both teach it as a art of self defense.
The goal is for the instructor to teach his or her students in such a way that they surpass him or her