It's amazing because the lists were made before the end of last school's year , other than the kids who are enrolling during the summer, everyone else was already assigned a teacher. I guess the office staff does not want to deal with the switching teachers before school starts, I'm sure people do that. Personally I have had a personal choice sometimes for certain teacher ( like I do this year for first grade ), but I won't make any changes if dd gets another teacher, in my opinion is don't change things unless you have a problem, my oldest had a teacher in second grade that is famous for being mean , turns out she's strict and some parents don't like that. DD never had a problem with her, but she cried the first day that she didn't want the mean teacher. I told her she had to give the teacher a chance and she had no problems after that.
They also have an open house day usually a couple of days before school starts, they get to most of the time meet the teachers, take a look at the materials they will be using and find out who the classmates will be. Interesting how it's different in different schools.