It’s fairly easy to weed out those who really have no idea what they are talking about, but there are some people who can fake sounding smart pretty convincingly. It’s not the obviously unqualified instructors one needs to worry about but rather those who are intelligent enough to pass for knowledgeable.
After it’s too late, you’ll find out you’ve made a mistake and by then, you’ve likely already wasted your time and money on the wrong candidate and learned some tactics and techniques that may actually be harmful to your vocal chords. You need to be careful about who you choose in the end, especially if you are just learning how to use and develop your gift.
There is no way you can know as much as the man or woman who will be your Teacher, but you should educate yourself enough to be able to tell who might actually be well-versed on the subject of singing.
You want someone who understands all things music, as well as how the human body works. Knowing even the bare minimum can be helpful when selecting the instructor who will prep you for auditions and school admissions events, which can be some of the most nerve-wracking and demanding processes for young talents.
Of course, depending on where you live and other restraints, you may have a limited number of options, and it’s entirely possible the above paragraphs don’t really apply to you. If that’s the case, do the best with whatever you can, but keep in mind if you really want to take your future career to the next level, you’ll need to find better Teachers, which is why many people travel for school. Your first Vocal Coach won’t necessarily make or break your future prospects, but you can still be picky.