I looked at the demographics posted below, and I think your daughter is very fortunate to be in such a diverse environment. She will be exposed to different languages and cultures while learning in a safe environment. This may seem scary to you, but it will broaden her perspective and her education, and eventually her prospects for colleges and careers.
The school will have to do something about the class size, but even if she is moved to another class with another teacher, she will be in a smaller group. And if it's the change you're worried about, moving her to another school in the middle of the year will be an even bigger change for her.
I am certain that most of the other parents speak English, even if they do not look like you. They're probably multi-lingual - just say hello and introduce yourself. If nothing else, you have kindergarteners in common.
As for the mother with an ankle monitor - at least she's taking her kid to school. And the school likely does background checks on everyone who volunteers or spends time with the kids. If she's potentially dangerous, she will not be around.
Bebensee Elem. is rated "recognized" by the state, which is a very good rating. I'm sure you're just nervous because everything is so new, and it's her first public school experience. Relax, trust that the school is doing its job, and please don't let your daughter sense your fears. She will have a great year and will make friends with all kinds of kids - and that's a good thing!