I've done placements in the welfare and education fields and organising placements is a huge and stressful job. It isn't just about trying to satisfy every student, it's about trying to ensure the placements are there. I've had placements that weren't my first choice but sometimes you just have to white knuckle it. I wanted a placement at my kids school. Had the principal and a teacher happy to take me. Would have worked in so well. But the placement unit won't allow placements where your kids go. It annoyed me but I just went elsewhere and loved it. There are learning opportunities in every situation.
I'm not saying to put up with bullying but the placement and staff there may surprise you. Deal with the bullying at the top level as you see fit, but I would take the placement you are given and make it work. When I first graduated I used my Field Educators as references until I developed paid work references.