(I'm not sure of the exact number of students because if I knew for sure I'm certain to panic from the strain and mentally implode. This would have a negative affect on my ability to knit.)
Miss Boo is 5, so I started her on piano almost a year ago, and just recently began teaching her the violin.
She has the teeniest little instrument that looks like a toy (it's a 1/16 size, which measures about 15 inches long from scroll to chin rest.)
She sounds appalling, but I don't tell her that. I'm the teacher, so I have to be loving and supportive. I'm also her parent, and I often wish that I could pay someone else to listen to her.
All beginning violinists (no matter the age) sound like they're trying to stuff a cat into a coke bottle with chopsticks, so this isn't any indication of future progress.
I am just very careful never to schedule two beginner violinists in a row. My nerves can only handle so much auditory torture.