Rebecca Guess

I've been in my class three times now in two weeks. It's been interesting to see that I'm a huge help to the teacher, she gets relieved when she sees me but I feel as though the jobs I'm doing are way beyond my qualifications. I'm in no way prepared or trained to administer fluency tests or anything along those lines. Every time I come in I'm handed off to administer these tests as though I actually know what I'm doing. I can understand why she would expect me to do these tests, she simply doesn't have the time to do them herself and properly teach the kids as well. But, I can't help but feel uncomfortable in doing what I am. How do I even begin to work with the kids? Am I allowed to tell them words they don't know before they begin the test if they ask? Do I count the words they miss each time, even if they are the same. How do I calculate the score at the bottom? What do I do if they ask me a question in the middle of their time?
I'm in another classroom as well and this one is first grade. I can't help but notice that teachers yell non-stop. They yell at the kids right and left. Don't get up, raise your hand, be quiet, take out your homework folders, stop being difficult...the list goes on and on. The kids seem to be remarkably good at tuning the teachers out. I can't help but wonder, are they yelling too much? I encountered a teacher yelling at her class after SHE had gotten them all wound up and jumping around for some activity they were doing. After they didn't calm down in three minutes she started yelling. Wasn't it her fault for getting them so riled up? Is it unfair to expect such young children to come right down from that play mentality? I feel overwhelmed and apprehensive and hope that I will have the patience to not scream and yell at every little thing.