answer:There is no better or worse. You need to spend some time in the classrooms of each grade that is covered in your degree. There is the curriculum and the maturity of the kids…both can vary widely, not just between grades but within the grade itself at that age. I have a very good friend who has been teaching second grade in a NYC public school for years. This fall, his principal switched him to kindergarten. He has talked about both grades at length. He needs more energy for maintenance of kindergarteners…bathrooms, hand washing, manners, rest period, etc and slightly less for academics. However, kindergarteners arrive being able to read and second graders occasionally wet their pants. In theory, your degree should give you the flexibility to teach all four levels. It is also fun for the teacher to have a slightly different experience from time to time..that relieves the boredom.