By introverted, do you mean shy? I don't really know how I could quantify my introverted-ness...
But if I could quantify my shyness on a scale of 1-10 (1 being extremely shy 10 being socially extroverted) I'd say that when I started teaching at 22, I was at a 4.5 and thought the same as you, I know I'll do fine with kids. When I stopped teaching 8 years later I was at a 7 because I had a lot of experience being social and it came as second nature. Teaching is a social job, you will have to interact with many people about their most precious possession --their children. That being said, being extremely introverted shouldn't mean you should shy away from a career that appeals to you. The personal growth of doing what you never thought you could do, being who you didn't think you'd become is IMO why we're here. The best advice I can give you is take time to observe and volunteer in the type of classroom you want to be in. Observe other classes too. ASK many different teachers any and all questions you have.
Personally, I loved every minute of teaching and wouldn't take it back for anything. But it was a challenging road. Any job that pays well is, right? However, I do remember the tough days when I would kick myself and say that I should have been a librarian. BTW any time I'd talk to a librarian, I'd tell them that and thy would almost always cry, NO you don't want to be a librarian! So who knows...
After I taught (1st and 2nd mostly) I went into a high pressure sales job --an introverts WORST nightmare. I personally grew by leaps and bounds and would rate myself a 9 today. I loved that job and did well at it because my clients knew I was genuine and not your run of the mill pushy salesman. I had to learn to stand up for myself and be around unscrupulous people. I had a conversation with a client once and told her I was very introverted and to that she said she would have never guessed. Being social when the occasion calls for it takes a lot out of me, it literally drains me and I need a lot of "me" time to recoup. Given the choice I'd rather be at home consumed in my own world, which is what I'm lucky enough to do at this present time. But alas, we all have to make our way in this world and hopefully put our mark on it as well
