If you are truly passionate about any career, there is no age limit. I agree with some of the previous posts--if you can, spend time with teachers, maybe as a guest for the day kind of thing. Keep in mind that what you see during your visit won't necessarily be what you would see on a daily basis. Be prepared to move, maybe even out of state, to find a job, should you move forward with this. I was born and raised in the Fox Cities, but I applied throughout Wisconsin and out of state. I spent a year as a sub, and was getting ready for a second year of subbing, when I received a call from Arizona. I've been here ever since (14 years). I would still like to move back some day, but I'm realistic enough to know that may never happen. However, I've been very lucky. For the most part, I've enjoyed my time here, mostly because I enjoy teaching. Whatever you decide, remember there will be good days and bad. But if you enjoy it, the good will outweigh the bad. Good Luck!