I have wanted to become a teacher for a while now, but I did not major in education or anything of that nature during my undergraduate studies. Therefore I didn't have an opportunity to observe teachers in a classroom setting through my coursework (from a teacher's perspective). I would like to teach high school science/chemistry. Now I would like to get a chance to observe a classroom setting but I do not know how to go about doing this. There are several local high schools near me and I was wondering if it is as simple as contacting/emailing the science teachers directly and asking them if I could spend a few hours a week just sitting quietly in their classroom or if it's a more extensive process than that. I mean, I'm sure there are background checks that need to be done and immunization documents I need to provide, but I just don't know who to contact first. Any advice as to where to go from here would be very much appreciated. Thank you.