What to wear to a classroom observation??

Ultimately, I just called the center I 'm going to and they said that it's okay to dress comfortably as long as it's suitable for school. But thank you all for the advice!

I 'm sorry if this is not part of here. I'm not sure where I should go for this advice any more. I am already a college graduate of Early Childhood Development in order to become a pre-school teacher, and I have an internship where I have to attend a two-hour class. I've arranged it for tomorrow, but all I can think of now is what I'll wear crybaby colored hoodie? Am I going to dress casual? I have a sweatshirt on it with the name of my school, I was considering wearing that with a few Jennings. Must I wear a nice shirt and dress pants?

I don't have a huge selection of clothes. My wardrobe mostly consists of sweatpants, leggings, 1 or 2 pairs of dress pants, and t-shirts.